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1 
Copyright 
Rayto Life and Analytical Sciences Co., Ltd.2017 
Version: 1.0 
Issuing date: Oct. 16, 2017 
Representation 
Shenzhen Rayto Life and Analytical Sciences Co., Ltd. (Rayto Company) reserves the 
copyright for this non published communication protocol specification, and has the right to 
treat it as confidential data. This representation is only used as the reference data of 
operating, maintaining and repairing Rayto products. 
This representation and all the intellectual property rights (including copyright) belong to 
Rayto Company. Without the prior written permission of Rayto, no one shall use, disclose 
or permit other people to obtain all or part of this representation by unjust means. Without 
the prior written permission of Rayto, no one shall photocopy, duplicate or translate all or 
part of this representation into other languages. 
Rayto company provides no warranty of any kind for this data, including (but not limited to) 
the implicit merchantable and suitable guarantee liability proposed for particular purposes. 
Rayto company assumes no responsibility for the mistakes included in this data, or the 
incidental or indirect damages caused by the offering, actual performance and usage. 
 2 
 
HL7 Communication Protocol 
Copyright ......................................................................................................................................... 1 
1 Overview of Communication Interface ................................................................................ 3 
1.1 Purpose .......................................................................................................................... 3 
1.2 Scope of application ...................................................................................................... 3 
1.3 Communication protocol specification ......................................................................... 3 
1.3.1 Supported information of HL7 interface protocol ............................................. 3 
1.3.2 Underlying transport layer protocol .............................................................. 3 
1.3.3 HL7 Message layer protocol ......................................................................... 4 
2 HL7 Introduction ..................................................................................................................... 6 
2.1 HL7 Basic syntax .......................................................................................................... 6 
2.2 HL7 Data type ............................................................................................................... 7 
3 Duplex communication .......................................................................................................... 8 
3.1 Supported HL7 message ............................................................................................... 8 
3.2 Definition of HL7 segments involved ........................................................................... 9 
3.3 Sample of complete message ...................................................................................... 26 
4 Definition of HL7 Data Type Used...................................................................................... 33 
5 Message Coding Definition ................................................................................................. 35 
6 Reference Books .................................................................................................................. 38 
 
 3 
1 Overview of Communication Interface 
 
1.1 Purpose 
This representation mainly illustrates the communication of Rayto Hematology 
RT-7600/7600S/7300/7200 operating software. 
1.2 Scope of application 
This application is only applicable for the Rayto HHematology analyzer 
RT-7600/7600S/7300/7200 instrument of Shenzhen Rayto Life and Analytical Sciences 
Co., Ltd. 
1.3 Communication protocol specification 
1.3.1 Supported information of HL7 interface protocol 
The LIS function of software of automated hematology analyzer of Rayto company 
provides the capacity of communicating through Ethernet and laboratory computer, the 
inspection results of the instruments can be sent to laboratory computer and accept 
worksheet through laboratory computer. 
This communication protocol is defined based on HL7 standards. HL7 is the electronic 
data interchange standard of healthcare field, it initially is defined by the United States and 
adopted by many counties now. This protocol is defined based on HL7 v2.3.1. Please 
refer to HL7 Interface Standards Version 2.3.1 for the detailed content of HL7. 
1.3.2 Underlying transport layer protocol 
The PC operating software transfers information through TCP connection, and the 
communication process can be divided into 3 stages: 
Connecting stage 
After starting the PC operating software, it will initiatively connect to LIS server according 
to software settings, it will continue to try to reconnect if the connection is not successful, 
and it will stay connected after the connection is successful to ensure the data can be sent 
at any time, it will try to reconnect if the connection is found disconnected during the 
operating process. 
Data transmission 
Communication of counting results and quality control data recording 
In addition to send data records in bulk in list review and quality control interface, if the 
automatic communication switch of counting results has been set up; the machine 
operating software will also send communication information at the same time of 
producing new sample counting results. Furthermore, the communication of counting 
results and quality control data records in the machine software can be set up as 
synchronous or non-synchronous communication. 
 4 
 Synchronous communication 
The sending and receiving of message for both batched communication and automatic 
communication are synchronous, that is waiting for a confirmation message for each 
message sent, the sending process of a message is only completed when the 
confirmation message is received within 10s and then send next message; if confirmation 
message is not received after waiting for 10s, then this message is considered failed to be 
sent and jump it to send next message directly. 
Quality control data recording communication is similar with counting results, click quality 
control or quality control history review interface to send message. Wait for confirmation 
for each quality control data message sent, the communication is considered successful if 
a confirmation message is received within 10s, otherwise it would be considered failed. 
Continue to send next message when confirmation message is received or timeout. 
 Non-synchronous communication 
Directly send all the results or recordings in turn instead of waiting for response during 
transmission for communications of counting results and quality control data recordings. 
Two-way LIS query information 
Two-way LIS query message communication is different. When the machine operating 
software turns on two-way LIS communication switch, query message will be sent before 
saving worksheet or counting, the query message includes sample number. LIS inquires 
sample information according to sample number, and response in HL7 message form, 
machine operating software fills the worksheet information according to responding 
information or conducts counting. The query will be considered failed when response 
message is not received within 10s after sending two-way LIS query information. 
Disconnect 
It will shut down the communication connection when exit out machine operating software. 
The current connection will be disconnected and set the connection according to new 
setting when changing the software communication settings. 
 
1.3.3 HL7 Message layer protocol 
HL7 Upper layer message protocol 
Sample resultsand other data message are communicated in the form of UTF-8 coded 
string. 
Express method of message coded strings shall be organized according to HL7 standard, 
namely multiple segments are included in one message, each segment can be divided 
into multiple fields, one field may be divided into multiple components and each 
component may be divided into multiple sub components. The content of segment, field, 
component and sub component are divided according to separators. 
The following is the part message example for HL7: 
MSH|^~\&||Rayto|||20170725152834||ORU^R01|201707251|P|2.3.1||||S||Unicode||| 
PID|1|2017072501|||Lucky|Cat||M|Jack||||||1Y|||||||||||||||| 
OBR|1||||||2014-12-09 11:51:42|||||||||||||||||||W|||||||||||||||||||||| 
…… 
 
 5 
HL7 Underlying message protocol 
 TCP/IP is a byte stream protocol, it doesn’t provide message boundaries. As upper-layer 
protocol, HL7 is based on message and doesn’t provide message termination mechanism. 
In order to determine the message boundaries, we adopt MLLP underlying protocol 
(There is corresponding description for this in HL7 Interface Standards Version 2.3.1.) 
 
Communication layer 
Message is transferred in the following form: 
<SB> ddddd <EB><CR> 
Including: 
<SB> = Start Block character, the value is 0x0B. 
ddddd = Data (variable number of bytes), it is effective data of HL7 message, 
represented in character string. 
<EB> = End Block character, the value is 0x1C. 
<CR> = Carriage Return, the value is 0x0D. 
 6 
2 HL7 Introduction 
2.1 HL7 Basic syntax 
 
Message construction rules 
Each HL7 message is composed of some segments; each segment is ended with <CR> 
character. 
Each segment is composed of section name of three characters and variable number of 
fields, each field is composed of component and subcomponent. Define the separators of 
field, component and subcomponent at the MSH segment of each message. 
For example: 
MSH|^~\&|Rayto|RT-7600|||20060427194802||ORU^R01|1|P|2.3.1||||||UNICODE 
Including: 
The five characters after MSH shall be used to differentiate the separators of each field, 
component and subcomponent. Although these characters can be any non-textual 
characters, but the HL7 recommends the characters in the following table: 
 
Character Meaning 
| Field separator 
^ Component separator 
& Subcomponent separator 
~ Repeating separator 
\ Escape character 
 
The first field of MSH includes each separator. The following some fields are empty 
because they are optional and not adopted by HL7 interface, detailed field definition and 
selection will be explained later. 
For any kind of message, the segments after MSH segment have fixed appearing order, 
these order will be specifically described in the following sections, these syntactic 
structures are adopted to represent the order of segments: 
The segments appeared in [] are optional. 
The segments in { } can be repeated once or several times. 
 
Escape rules of character string 
In the field data in ST, TX, FT, CF and other types, escape separators may appear in 
character string data, such as remark, diagnostic message and user defined gender etc, 
escape the separators in original character string into escape character sequence, and 
then restore them while decoding. HL7 interface adopts the following escape rules: 
 
 7 
Escape character 
sequence 
Original character 
\F\ Field separator 
\S\ Component separator 
\T\ Subcomponent separator 
\R\ Repeating separator 
\E\ Escape character 
\.br\ <CR> means ending 
character of segment 
Note: the ‘\’ in escape character string sequence means escape separator, its value is 
defined in MSH segment. 
2.2 HL7 Data type 
All the data messages are represented as different HL7 type fields, present 
communication protocol has only adopted part of the types that provided by HL7 
standards, see “using HL7 data type definition” for detailed introduction. 
 
 8 
3 Duplex communication 
3.1 Supported HL7 message 
 
Duplex communication process 
1. The mainframe sends inspection results (or quality control data message) to LIS, as 
shown in figure 1. 
 
 
 
Figure 1 Communication process diagram of inspection results and quality control data 
2. Worksheet message query 
Worksheet belongs to order message, relevant HL7 message can be used: ORM 
(General Order Message) and ORR (General Order Response Message), the 
communication process is as shown in figure 2. 
 
 
Figure 2 Communication process diagram worksheet query 
 
Mainly used message 
ORU^R01 Message: mainly used in the transformation of inspection results and 
quality control data. 
ORU Observational Results (Unsolicited) Description 
MSH message header is necessary, including the communication of message number, 
sending time, message separator, coding scheme and other communication messages 
{ 
 
 
 
Machine 
 
 
 
 
LIS System 
 
ORM^O01 
ORR ^O02 
 
 
 
Machine 
 
 
 
LIS System 
ORU^R01 
ACK ^R01 
 9 
PID Patient’s basic information, including patient’s name, sex, medical record number 
and birthday etc 
{ 
OBR Sample information, including sample number, inspector and inspecting time etc 
{[OBX]} Inspection data item, including inspection parameters results etc. 
} 
} 
 
ACK^R01 Message: Confirm the received ORU^R01 message. 
ACK Acknowledgment Description 
MSH message header 
MSA message confirmation, described the communication message has been 
successfully received or not 
 
ORM^O01 Message: general Order message, basically all the relevant movements 
related to Order adopt this message type, such as create a new order, cancel an order 
etc., it refers to mainframe requires LIS to refill the order message here. 
ORM General Order Message Description 
MSH Message header 
{ORC}General message of Order, including all the number message of the sample 
queried. 
 
ORR^O02 Message: confirmation of ORM^O01 message, it return the complete 
information of order (worksheet) 
ORR^O02 General Order Response Message Description 
MSH Message header 
MSA Message confirmation 
[PID Patient information 
{ 
[ 
OBR Sample information 
{[OBX]} Other sample information data, including sample work mode etc. 
] 
} 
 
3.2 Definition of HL7 segments involved 
The detailed definition of the fields included in each segment will be illustrated in the list 
below, each line of the table corresponds to a field in the segments, and the meaning of 
each line of the table is as following: 
1. Serial number: the beginning of HL7 segment is a segment name of 3 characters, each 
subsequent field separator is followed with the content of one field, and serial number is 
the ordinal position of field in HL7 message segment. 
 
 10 
For example: 
PID | 1 | 1 |20121212||INLXL||19860101|M|||||||26Y|||||||||||||||| 
 ↑ ↑ ↑ 
Message segment name Field 1 Field 3 
Note: MSH message segments are slightly different, the closely followed field separator 
after message segment name is considered as the first field, it is used to describe the 
value of field separators adopted in the whole message. 
2. Field name: the logical meaning of the field, the field explanation provided by HL7. 
3. Data type: HL7 standard type of field, its structure will be described in the “used HL7 
data type definition”. 
4. HL7 recommended maximum length: HL7 standard recommended length. But in the 
actual message transmission process, the actual transformed length will exceed this value; 
therefore, separator is adopted as the symbol to read the message field while parsing the 
message. 
5. Description: the description of the actual value content of the content. 
6. Sample: Sample of the actual valueof the field 
 
Note: for the future expansion need of the operating software, no field in 
the message segment shall be omitted in the HL7 interface 
protocol support, if there is no value in this field, leave it blank. 
MSH 
MSH (Message Header) message segment contains the basic information of HL7 
message, including the message separator value, message type and the coding scheme 
of the message, it is the first field of each HL7 message. 
Message sample: 
MSH|^~\&||Rayto|||20170725152834||ORU^R01|201707251|P|2.3.1||||S||UNICODE||| 
See table 1 for the definition of the fields used in MSH message segment. 
Table 1 MSH fields definition table 
Serial 
number 
Field name 
Data 
type 
HL7 
recommend 
maximum 
length 
Description Sample 
1 
Field 
Separator 
ST 1 
Including the first 
segment separator after 
the message segment 
name, is used to specify 
the segment separator 
values of the rest of the 
| 
 11 
message. 
2 
Encoding 
Characters 
ST 4 
Including component 
separator, repeating 
separator, escape 
separator and 
subcomponent separator 
^~\& 
3 
Sending 
Application 
HD 180 
Transmitting terminal 
application 
Rayto 
4 
Sending 
Facility 
HD 180 
Transmitting terminal 
facility 
RT-7600 
5 
Receiving 
Application 
HD 180 
Blank, reserved. 
Receiving end 
application program 
 
6 
Receiving 
Facility 
HD 180 
Blank, reserved. 
Receiving end equipment 
 
7 
Date/Time 
Of 
Message 
TS 26 
Time of current 
message. Invoke the 
time information of the 
system. 
 
8 Security ST 40 Blank, reserved. Security 
9 
Message 
Type 
CM 7 Message type ORU^R01 
10 
Message 
Control ID 
ST 20 
Message control ID, the 
only message identified, 
progressively increase 
with the message 
number, the format is 
date + number 
201707251 
11 Processing PT 3 Processing ID, always P 
 12 
ID adopts P to represent 
products 
12 Version ID VID 60 
Version ID, HL7 protocol 
version 
2.3.1 
13 
Sequence 
Number 
NM 15 
Blank, reserved. 
Sequence number 
 
14 
Continuatio
n Pointer 
ST 180 
Blank, reserved. 
Continuation pointer 
 
15 
Accept 
Acknowled
gment 
Type 
ID 2 
Blank, reserved. Accept 
acknowledgment type 
 
16 
Application 
Acknowled
gment 
Type 
ID 2 
Application 
acknowledgment type, as 
the sending results type. 
 S: (Sample) patient 
sample inspection result, 
C (Calibration) calibration 
result, Q (QC Result) 
quality control result 
S 
17 
Country 
Code 
ID 2 
Blank, reserved. Country 
code 
 
18 
Character 
Set 
ID 10 Character set UNICODE 
19 
Principal 
Language 
Of 
Message 
CE 60 
Blank, reserved. 
Principal language Of 
message 
 
20 Alternate ID 20 Blank, reserved. 
 13 
Character 
Set 
Handling 
Scheme 
Alternate character set 
handling scheme 
 
 
MSA 
MSA (Message Acknowledgement) Message segment contains message 
confirmation information. 
Message sample: 
MSA|AA|201707251||||| 
See table 2 for the definition of fields used. 
Table 2 MSA field definition table 
Seri
al 
num
ber 
Field name 
Dat
a 
typ
e 
HL7 
recommen
d 
maximum 
length 
Description Sample 
1 
Acknowledgm
ent Code 
ID 2 
Acknowledgment code, AA means 
accept; AE means error; AR 
means reject. 
AA 
2 
Message 
Control ID 
ST 20 
Message control ID, same as the 
MSH-10 of sender. 
201707251 
3 Text Message ST 80 
Text message, it is a text 
description of the event when 
error occurs or reject. Correspond 
to the sixth field and can be used 
to write the error log. 
 
4 
Expected 
Sequence 
Number 
NM 15 
Blank, reserved. Expected 
sequence number 
5 Delayed ID 1 
Blank, reserved. Delayed 
 
 14 
Acknowledgm
ent Type 
acknowledgment type 
6 
Error 
Condition 
CE 100 
Error condition (status code) 
 
 
Table 3 Error code table of MSA-6 field 
Status code 
(MSA-6) 
Status text (MSA-3) Description/Remark 
Succeed AA 
 Message accepted Succeed 
Error status code: AE 
100 Segment sequence error 
Segment sequence error in the 
message, or required segment is 
missing 
101 Required field missing Required field in a segment is missing 
102 Data type error 
Data type error of field, such as 
numbers become characters 
103 Table value not found 
Table value is not found, not used for 
the time being. 
Reject status code: AR 
200 
Unsupported message 
type 
Unsupported message type 
201 Unsupported event code Unsupported event code 
202 
Unsupported processing 
id 
Unsupported processing ID 
203 Unsupported version id Unsupported version ID 
204 Unknown key identifier 
Unknown key identifier, such as 
transfer a nonexistent patient 
information 
205 Duplicate key identifier Existed duplicated key identifier 
 15 
206 Application record locked 
The transaction can’t be performed in 
the application storage level, such as 
application record is locked 
207 Application internal error 
Other unknown application internal 
error 
 
PID 
PID (Patient Identification) segment includes the basic information of the patient. 
Message sample: 
PID|1|201707251|||Ling Xiaozhong||1990504|M|||||||22Y|||||||||||||||| 
See table 4 for the definition of the field used. 
Table 4 PID field definition table 
Seri
al 
num
ber 
Field name 
Dat
a 
typ
e 
 
HL7 
recommen
d 
maximum 
length 
Description Sample 
1 Set ID – PID SI 10 
Serial number, is used in the different 
PID message segments of the same 
message 
1 
2 Patient ID CX 20 
It is sample number in the sample 
results, It is quality control batch 
number in the quality control 
201707251 
3 
Patient 
Identifier List 
CX 20 Blank, reserved. Patient identifier list 
4 
Alternate 
Patient ID – 
PID 
CX 20 
Blank, reserved. Alternate patient ID – 
PID 
 
5 Patient Name 
XP
N 
48 
It is name in sample result; it is quality 
control name in quality control result. 
Ling 
Xiaozhong 
 16 
6 
Mother’s 
Maiden Name 
XP
N 
48 
Blank, reserved. Mother’s maiden 
name 
 
7 
Date/Time of 
Birth 
TS 26 
It is date of birth, the form is 
YYYY[MM[DD[HH]] 
It is period of validity in L-J, X-R quality 
control. 
19900504 
8 Sex IS 1 
Sex: male, send M; female, send F; 
other, send O. 
Leave blank and reserved in the quality 
control result. 
M 
9 Patient Alias 
XP
N 
48 Blank, reserved. Patient alias 
10 Race CE 80 Blank, reserved. Race 
11 
Patient 
Address 
XA
D 
106 Blank, reserved. Patient address 
12 County Code IS 4 Blank, reserved. Country code 
13 
Phone 
Number- 
Home 
XT
N 
40 Blank, reserved. Phone number-Home 
14 
Phone 
Number - 
Business 
XT
N 
40 
Blank, reserved. Phone number - 
Business 
 
15 
Primary 
Language 
 
CE 60 
Age, with units. Y means year, M 
means month, D means day, H means 
hour. Leave blank and reserved in the 
quality control results. 
22Y 
16 Marital Status CE 80 Blank, reserved. Marital status 
17 Religion CE 80 Blank, reserved. Religion 
18 Patient CX 20 Blank, reserved. Patient account 
 17 
Account 
Number 
number 
19 
SSN 
Number-Patie
nt 
ST 16 Blank, reserved. SSN Number-Patient 
20 
Driver's 
License 
Number – 
Patient 
DL
N 
25 
Blank, reserved. Driver's license 
number – Patient 
 
21 
Mother's 
Identifier 
CX 20 Blank, reserved. Mother's identifier 
22 Ethnic Group CE 80 Blank, reserved. Ethic group 
23 Birth Place ST 60 Blank, reserved. Birth place 
24 
Multiple Birth 
Indicator 
ID 1 Blank, reserved. Multiple birth indicator 
25 Birth Order NM 2 Blank, reserved. Birth order 
26 Citizenship CE 80 Blank, reserved. Citizenship 
27 
Veterans 
Military Status 
CE 60 
Blank, reserved. Veterans military 
status 
 
28 Nationality CE 80 Blank, reserved. Nationality 
29 Patient Death TS 26 
Blank, reserved. Date and time of 
patient death 
 
30 
Patient Death 
Indicator 
ID 1 
Blank, reserved. Patient death 
indicator 
 
 
OBR 
OBR (Observation Request)message segment mainly includes inspection report 
information. 
Message sample: 
OBR|1||20071207011|00001^AutomatedCount^99MRC||20071207080000|20071207 
160000|||Rayto|||Cold|20071207083000||||||||||HM||||||||Rayto 
See table 5 for the definition of the field used. 
 18 
Table 5 OBR field definition table 
Seri
al 
num
ber 
Field name 
Dat
a 
typ
e 
 HL7 
recommend 
maximum 
length 
Description Sample 
1 Set ID – OBR SI 10 
Serial number, used to determine the 
different OBR segments in the 
message. 
1 
2 
Placer Order 
Number 
EI 22 
It is sample number in the response 
message of worksheet query, namely 
ORC^O02. 
2007120
7011 
3 
Filler Order 
Number 
EI 22 
Blank, reserved. Filler order number. It 
is document number in quality control 
message. 
01 
4 
Universal 
Service ID 
CE 200 
Left blank and reserved in sample 
results. Universal service ID. 
Used to identify different quality control 
settings or counting results in quality 
control results, the values is one of the 
LJ QCS (LJ Quality control setting), LJ 
QCR (LJ Quality control result) ,XB QCS 
(XB Quality control setting),XB QCR(XB 
Quality control result), XR QCS (XR 
Quality control setting), XR QCR (XR 
Quality control result). 
 
5 Priority ID 2 Blank, reserved. Priority 
6 
Requested 
Date/time 
TS 26 
Left blank and reserved in sample 
results. It is requested date/time in the 
quality control result. 
 
 19 
7 
Observation 
Date/Time 
TS 26 Observation date/time 
8 
Observation 
End 
Date/Time 
TS 26 
Blank, reserved. Observe the end 
date/time. 
 
9 
Collection 
Volume 
CQ 20 Blank, reserved. Collection volume 
10 
Collector 
Identifier 
XC
N 
60 Blank, reserved. Collector identifier 
11 
Specimen 
Action Code 
ID 1 Blank, reserved. Specimen action code 
12 Danger Code CE 60 Blank, reserved. Danger code 
13 
Relevant 
Clinical Info. 
ST 300 
It is relevant clinical information in 
sample results, left blank and reserved 
in quality control results. 
Cold 
14 
Specimen 
Received 
Date/Time 
TS 26 
Received date/time in specimen results, 
left blank and reserved in quality control 
results. 
 
15 
Specimen 
Source 
CM 300 
It is specimen source in specimen 
results, left blank and reserved in quality 
control results. 
 
16 
Ordering 
Provider 
XC
N 
120 
It is department in specimen results, left 
blank and reserved in quality control 
results. 
 
17 
Order 
Callback 
Phone 
Number 
XT
N 
40 Blank, reserved. 
18 Placer Field1 ST 60 
It is medical record number in specimen 
results, left blank and reserved in quality 
control results. 
 
19 Placer Field 2 ST 60 
It is medical bed number in specimen 
results, left blank and reserved in quality 
control results. 
 
 20 
20 Filler Field1 ST 60 
It is tester in specimen results, setter or 
tester in quality control results. 
 
21 Filler Field2 ST 60 
It is auditor in specimen results, left 
blank and reserved in quality control 
results. 
 
22 
Result 
Rpt/Status 
Change 
–Date/Time 
TS 15 
Blank, reserved. Result report /Status 
change –Date/Time 
 
23 
Charge to 
Practice 
CM 40 
It is charge type in specimen results, O 
(Own), I (Insurance), P (Public), and U 
(Unknown), left blank and reserved in 
quality control results. 
O 
24 
Diagnostic 
Serve Sect ID 
ID 10 
It is patient type in specimen results, Cl 
(Clinic), Ho (Hospitalize), Em 
(Emergency), Ex (examination), Un 
(Unknown) 
Cl 
25 Result Status ID 1 
It is sample introduction mode in 
specimen results, O (Open), A (Auto), C 
(Closed), U (Unknown) 
A 
26 Parent Result CM 200 
Blood sample mode 
W (Whole), P (Pre-diluted), U 
(Unknown) 
W 
27 
Quantity/Timin
g 2 
TQ 00 
Test mode 
 
 
28 
Result Copies 
To 
XC
N 
150 
It is reference scope group in specimen 
results, such as adult man, adult 
woman, child and custom. 
It is quality control level in quality control 
result, value is L(Low), N(Normal), 
H(High) 
Adult 
man 
29 Parent CM 150 
Automatic injection mode is test tube 
rack number, other mode is 0. 
7 
30 
Transportation 
Mode 
ID 20 
Automatic injection mode is test tube 
position number, other mode is 0. 
10 
31 
Reason for 
Study 
CE 300 Blank, reserved. Reason for study 
32 Principal CM 200 
Blank, reserved. Principal result 
interpreter 
 
 21 
Result 
Interpreter 
33 
Assistant 
Result 
Interpreter 
CM 200 
Blank, reserved. Assistant result 
interpreter 
 
34 Technician CM 200 Blank, reserved. Technician 
35 
Transcriptionis
t 
CM 200 Blank, reserved. Transcriptionist 
36 
Scheduled 
Date/Time 
TS 26 Blank, reserved. Scheduled date/time 
37 
Number of 
Sample 
Containers 
NM 4 
Blank, reserved. Number of sample 
containers 
 
38 
Transport 
Logistics of 
Collected 
Sample 
CE 60 
Blank, reserved. Transport logistics of 
collected sample 
 
39 
Collector’s 
Comment 
CE 200 Blank, reserved. Collector’s comment 
40 
Transport 
Arrangement 
Responsibilit
y 
CE 60 
Blank, reserved. Transport arrangement 
responsibility 
 
41 
Transport 
Arranged 
ID 30 
Blank, reserved. Transport arranged or 
not 
 
42 
Escort 
Required 
ID 1 Blank, reserved. Escort required 
43 
Planned 
Patient 
CE 200 
Blank, reserved. Planned patient 
transport comment 
 
 22 
Transport 
Comment 
44 
Ordering 
Facility Name 
CE 60 Blank, reserved. Ordering facility name 
45 
Ordering 
Facility 
Address 
CE 106 
Blank, reserved. Ordering facility 
address 
 
46 
Ordering 
Facility Phone 
Number 
CE 48 
Blank, reserved. Ordering facility phone 
number 
 
47 
Ordering 
Provider 
Address 
 
CE 106 Remark 
 
OBX 
OBX (Observation/Result) message segment mainly includes the parameter information 
of each inspection result. 
Message sample: 
OBX|1|NM|WBC||5.73|10*9/L|4-10|N|||F||||||| 
See table 6 for the definition of the field used. 
Table 6 OBX field definition table 
Seri
al 
num
ber 
Field name 
Dat
a 
typ
e 
HL7 
recommen
d 
maximum 
length 
Description Sample 
1 Set ID – OBX SI 4 
Serial number, used to identify the 
different OBX segments in the 
message. 
1 
2 Value Type ID 2 
Data type of inspection results, the 
values are “ST”, “NM”, “ED” and 
NM 
 23 
“IS” etc. 
3 
Observation 
Identifier 
CE 250 Inspection item identifier. WBC 
4 
Observation 
Sub-ID 
ST 20 
Leave the specimen results and 
quality control result blank and 
reserved. Observation Sub-ID 
L-J, X-B Quality control setting, R 
(Reference), L (Limit) , X-R 
Quality control result, X (Mean), R 
(Range) 
 
5 
Observation 
Value 
* 65536 
The inspection result values can 
be numbers, character string, 
enumerated values and binary 
data etc. (The binary data for 
histogram and scatter diagram 
adopts Base64 coding scheme for 
transition, see Base64 coding 
process for coding scheme.) 
Invalid value is “ ” 
5.73 
6 Units CE 250 
Units for inspection items. ISO 
standard units are adopted to 
represent. 
10*9/L 
7 
References 
Range 
ST 60 
Inspection results range, the form 
is: “Reference range lower 
limit—reference range upper limit” 
4.00-10.00 
8 
Abnormal 
Flags 
IS 5 
Inspection results signals 
N (Normal), H (High) the results 
are higher than reference range 
upper limit, L (Low) the results are 
N 
 24 
lower than reference range lower 
limit 
9 Probability NM 5 Blank, reserved. Probability 
10 
Nature of 
Abnormal Test 
ID 2 
Blank, reserved. Nature of 
abnormal test 
 
11 
Observe 
Result Status 
ID 1 
Observe result status. F: Final 
Result; L-J, X-B Quality control 
data is blank. 
F 
12 
Date Last 
Observe 
Normal Values 
TS 26 
Blank, reserved. Date of last 
observe normal values 
 
13 
User Defined 
Access 
Checks 
ST 20 
Blank, reserved. User defined 
access checks. 
 
14 
Date/Time of 
the 
Observation 
TS 26 
Blank, reserved. Date/Time ofthe 
observation 
 
15 Producer’s ID CE 250 Blank, reserved. Producer’s ID 
16 
Responsible 
Observer 
XC
N 
250 
Blank, reserved. Responsible 
observer 
 
17 
Observation 
Method 
CE 250 
Blank, reserved. Observation 
method 
 
 
ORC 
ORC (Common Order) message segment mainly includes the general information of order 
Message sample: 
ORC|RF||20121206RTS001||IP|||||||||||||||| 
See table 7 for the field definition. 
Table 7 ORC field definition table 
 25 
Serial 
number 
 
Field name 
Data 
type 
HL7 
recommend 
maximum 
length 
Description Sample 
1 Order Control ID 2 
Order control word. 
ORM message contains RF 
(refill the order request) 
ORR message contains AF 
(order refill confirmation) 
RF 
2 
Placer Order 
Number 
EI 22 
Initiator order number 
ORM message is blank, 
ORR message contains 
specimen number. 
 
3 
Filler Order 
Number 
EI 22 
Filler order number. 
ORM message contains 
specimen number. 
ORR message is blank. 
2012120
6RTS00
1 
4 
Placer Group 
Number 
EI 22 Blank, reserved. 
5 Order Status ID 2 
Order status. 
It is fixed as IP in the 
worksheet information 
query communication ORM 
message (Order is in 
processing, but no results 
have been obtained) 
ORR message is blank; 
IP 
6 Response Flag ID 1 
Blank, reserved. Response 
flag 
 
7 Quantity/Timing TQ 200 
Blank, reserved. 
Quantity/Timing 
 
8 Parent CM 200 
Blank, reserved. Father 
order. 
 
9 
Date/Time of 
Transaction 
TS 26 
Blank, reserved. Date/Time 
of transaction 
 
 26 
10 Entered By XCN 120 
Blank, reserved. Entered 
By 
 
11 Verified By XCN 120 Blank, reserved. Verified By 
12 
Ordering 
Provider 
XCN 120 
Blank, reserved. Ordering 
provider 
 
13 
Enterer’s 
Location 
PL 80 
Blank, reserved. Enterer’s 
location 
 
14 
Call Back 
Phone Number 
XTN 40 
Blank, reserved. Call back 
phone number 
 
15 
Order Effective 
Date/Time 
TS 26 
Blank, reserved. Order 
effective date/time 
 
16 Order Control 
Code Reason CE 200 
Blank, reserved. Control 
code for request reason 
 
17 Entering 
Organization CE 60 
Blank, reserved. Entering 
organization 
 
18 Entering Device CE 60 
Blank, reserved. Entering 
device 
 
19 Action By XCN 120 Blank, reserved. Action by 
20 
Advanced 
Beneficiary 
Notice Code 
CE 40 
Blank, reserved. Advanced 
beneficiary notice code. 
 
 
 
3.3 Sample of complete message 
Sample massage 
MSH|^~\&||Rayto|||20170725152834||ORU^R01|201707251|P|2.3.1||||S||Unicode||| 
PID|1|2017072501|||Lucky|||M|||||||1Y|||||||||||||||| 
OBR|1||||||2014-12-09 11:51:42|||||||||||||||||||W|||||||||||||||||||||| 
OBX|1|NM|WBC||5.6|10\S\9/L|4-10||||F||||||| 
OBX|2|NM|LYMP||51.9|%|20-50|H|||F||||||| 
OBX|3|NM|MONP||32.4|%|1-15|H|||F||||||| 
OBX|4|NM|GRAP||15.7|%|40-70|L|||F||||||| 
OBX|5|NM|LYMA||2.9|10\S\9/L|0.6-4.1||||F||||||| 
OBX|6|NM|MONA||1.8|10\S\9/L|0.1-1.8||||F||||||| 
OBX|7|NM|GRAA||0.9|10\S\9/L|2-7.8|L|||F||||||| 
OBX|8|NM|RBC||3.33|10\S\12/L|3.8-5.8|L|||F||||||| 
OBX|9|NM|HGB||83|g/L|110-165|L|||F||||||| 
OBX|10|NM|MCHC||256|g/L|320-360|L|||F||||||| 
OBX|11|NM|MCH||24.9|pg|26.5-33.5|L|||F||||||| 
OBX|12|NM|MCV||97.3|fL|80-99||||F||||||| 
OBX|13|NM|RDWCV||12.6|%|10-15||||F||||||| 
OBX|14|NM|RDWSD||61.1|fL|35-56|H|||F||||||| 
OBX|15|NM|HCT||32.4|%|30-50||||F||||||| 
 27 
OBX|16|NM|PLT||188|10\S\9/L|100-300||||F||||||| 
OBX|17|NM|MPV||9.4|fL|7-11||||F||||||| 
OBX|18|NM|PDW||8.7|fL|10-18|L|||F||||||| 
OBX|19|NM|PCT||0.178|%|0.1-0.5||||F||||||| 
OBX|20|NM|PLCR||36.5|%|13-43||||F||||||| 
OBX|21|TX|Waring||||||||F||||||| 
OBX|22|ED|WBC 
Histogram||0.00.00.00.00.50.50.50.50.00.00.00.00.00.00.00.00.50.50.00.00.50.50.00.00.50.50.50.50.00
.02.52.53.03.05.05.05.55.510.010.012.012.015.015.015.515.513.513.511.011.015.015.013.513.516.516
.514.014.012.012.021.021.08.58.521.521.522.522.524.524.536.536.535.535.541.541.542.042.056.056.
037.537.544.544.543.543.552.052.050.550.545.045.049.049.063.063.038.038.042.542.545.045.040.54
0.536.036.040.540.538.038.039.039.039.539.537.537.539.539.544.544.538.538.539.539.546.046.043.
043.045.045.042.042.038.038.046.546.543.543.546.046.047.047.048.048.040.540.541.541.532.532.54
0.040.024.524.534.534.528.028.028.028.029.529.525.025.025.025.022.022.021.021.013.513.517.517.
514.014.014.514.512.012.012.012.014.514.513.013.011.011.08.08.08.58.57.57.510.010.08.08.06.56.56
.06.04.54.54.04.04.54.53.03.04.54.51.01.02.52.51.51.52.02.01.51.51.51.50.50.50.50.52.02.01.51.50.50
.51.51.50.50.50.50.50.00.00.50.51.51.50.50.51.01.00.00.00.50.51.01.00.00.00.00.01.01.00.00.00.50.52
.02.00.50.50.50.52.02.00.00.00.50.50.50.50.00.00.50.50.00.00.50.50.00.00.50.51.51.50.50.50.50.50.50
.50.50.50.00.00.00.01.01.00.00.00.50.50.00.00.00.00.50.50.50.50.00.00.50.50.00.00.50.50.00.00.00.00
.00.00.00.00.00.00.50.50.00.00.00.00.00.00.00.00.50.50.50.50.00.00.50.50.50.50.00.00.50.50.00.00.00
.00.00.00.50.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.50.50.00.00
.00.00.00.00.00.00.50.50.00.00.00.00.00.00.50.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00
.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00
.50.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00
.00.00.00.00.00.50.50.00.00.00.00.00.00.0||||||F||||||| 
OBX|23|NM|WBC Start Line||17||||||F||||||| 
OBX|24|NM|WBC Left Line||92||||||F||||||| 
OBX|25|NM|WBC Right Line||123||||||F||||||| 
OBX|26|NM|WBC End Line||400||||||F||||||| 
OBX|27|ED|RBC 
Histogram||0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00
.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.06.06.09.09.04.54.56.56.54.04.05.05.03
.03.02.52.53.53.51.51.51.51.55.05.04.04.03.03.05.55.54.54.54.04.01.51.52.02.02.52.51.51.53.53.53.53
.53.03.01.51.53.53.52.02.02.52.51.51.53.03.06.06.07.07.04.04.05.55.55.55.52.52.59.59.511.011.013.01
3.015.015.022.522.518.518.527.527.536.536.539.039.046.046.051.551.572.572.567.567.578.078.0108
.0108.0119.0119.0129.5129.5148.0148.0149.5149.5153.5153.5163.5163.5197.0197.0206.5206.5209.0
209.0214.5214.5181.0181.0235.0235.0239.5239.5236.5236.5211.0211.0219.0219.0226.0226.0221.522
1.5218.5218.5203.5203.5194.5194.5200.5200.5200.0200.0190.5190.5196.5196.5153.0153.0158.5158.
5147.5147.5146.0146.0177.5177.5131.5131.5127.5127.5144.5144.5129.5129.5119.0119.0126.0126.01
11.5111.5108.5108.599.099.0107.0107.096.096.0106.0106.086.586.579.579.595.595.580.080.084.584.
581.581.565.565.570.570.578.578.571.071.055.055.053.553.551.551.557.057.053.053.046.546.550.55
0.525.025.026.026.034.534.529.529.531.531.536.036.028.028.017.517.515.015.017.017.017.017.011.5
11.510.010.07.07.013.513.59.09.010.010.07.07.08.58.56.06.06.06.03.53.56.06.04.04.03.03.05.05.05.05
.04.04.04.04.05.55.50.50.55.05.04.04.02.02.03.53.51.01.03.03.06.56.53.03.03.03.01.51.51.51.52.02.01
 28 
.51.53.03.01.01.03.53.54.04.05.05.01.51.52.02.01.51.53.03.05.05.02.02.01.51.54.04.02.02.02.02.01.51
.52.02.02.52.53.03.03.53.51.51.51.51.51.51.53.03.01.51.52.52.52.52.51.01.01.51.51.01.01.01.02.02.02
.02.02.02.01.01.01.01.02.02.01.01.02.02.00.00.01.01.02.02.01.01.00.50.50.50.50.00.01.01.01.01.02.02
.00.50.50.50.51.01.00.50.51.51.50.50.51.51.51.51.51.51.51.01.01.51.50.50.50.50.51.01.00.50.50.50.50
.00.00.50.51.01.00.00.00.00.00.50.50.00.00.50.50.00.00.00.01.01.00.0||||||F||||||| 
OBX|28|NM|RBC Start Line||25||||||F||||||| 
OBX|29|NM|RBC End Line||200||||||F||||||| 
OBX|30|ED|PLT 
Histogram||5.55.50.00.00.00.00.00.00.50.50.50.50.50.51.51.51.01.02.52.55.05.08.08.07.07.07.57.510.0
10.013.513.57.07.07.57.55.55.515.015.010.010.09.59.513.013.018.518.59.59.517.017.08.58.511.011.0
12.012.015.015.012.012.021.021.06.06.011.511.59.59.514.514.510.510.516.016.06.06.016.516.58.08.0
7.07.05.55.58.58.510.510.57.07.04.54.512.012.03.53.512.512.57.57.55.55.54.04.04.54.53.03.05.55.53.
53.54.54.54.04.04.54.54.54.52.52.54.54.55.55.53.53.55.05.02.52.53.03.03.03.04.54.53.53.54.54.50.50.
52.02.04.04.01.01.04.54.52.52.52.52.52.02.01.01.02.02.02.52.51.51.50.50.52.02.01.01.02.52.50.50.51.01.01.51.51.01.01.01.00.50.50.50.52.52.50.00.01.01.00.50.50.00.01.01.00.50.50.00.01.01.00.00.00.00.
01.51.50.50.50.00.00.50.51.51.50.50.50.50.52.52.51.01.01.01.01.01.00.50.51.01.00.00.00.00.01.01.00.
00.00.00.00.00.00.50.50.00.00.0||||||F||||||| 
OBX|31|NM|PLT Start Line||2||||||F||||||| 
OBX|32|NM|PLT End Line||21||||||F||||||| 
Sample reply message 
One sample reply message shall be responded for each sample result received. Sample 
reply message includes two segments MSH and MSA. Two points should be paid 
attention to for correct reply message: ACK^R01 needs to be filled in the content of 
MSH-9 content, means the type of this message is sample reply message. The value of 
MSA-2 segment is the same with that of MSH-10 segment, which has received counting 
results, means that this reply message corresponds to the already sent counting results, 
the value of MSA-2 segment is 201304011 is this example. 
MSH|^~\&|LIS||||20130401172902||ACK^RO1| 1|P|2.3.1||||S||UNICODE||| 
MSA|AA|201304011||||| 
 
Quality control message 
PC operating software currently supports 3 quality control methods, L-J, X-B and X-R. The 
content and form of quality control result message are different from that of sample 
counting result message: the MSH-16 value of quality control message is Q, means the 
message type is quality control data; each quality control result message corresponds to 
one quality control point of PC terminal operating software, multiple results might be 
included, one L-J and X-B
1
 quality control message includes one counting result, and one 
X-R quality control message includes one average calculation result and one range result 
obtained through calculating, point out average calculation result (X) or range result (R) in 
OBX-4 segment of the message. There are quality control set messages for L-J and X-B 
quality control, one quality control message contains reference value and deviation value, 
point out reference value ® or deviation value (L). 
Quality control result message is composed of one MSH message header and multiple 
 
 
 29 
counting results, each counting result starts with PID and OBR segments that contains 
sample messages, there are multiple OBX segments used for carrying parameter results 
and other messages. Determine it is L-J quality control setting, counting result, X-B quality 
control setting or X-R quality control through OBR-4 segment. 
Quality control reply message 
There is only one difference between quality control reply message and counting result 
reply message: the value of MSH-16 segment is Q. 
Samples of quality control message and reply message: 
L-J quality control setting message: 
MSH|^~\&||Rayto|||20170725154238||ORU^R01|201707251|P|2.3.1||||Q||Unicode||| 
PID|1|a01|||||2017-08-02|||||||||||||||||||||||| 
OBR|1||1|LJ QCS|||||||||||||||||||||||||||||||||||||||||||| 
OBX|1|NM|WBC|R|5|10\S\9/L|||||||||||| 
OBX|2|NM|LYMP|R|5|%|||||||||||| 
OBX|3|NM|MONP|R|5|%|||||||||||| 
OBX|4|NM|GRAP|R|5|%|||||||||||| 
OBX|5|NM|LYMA|R|5|10\S\9/L|||||||||||| 
OBX|6|NM|MONA|R|5|10\S\9/L|||||||||||| 
OBX|7|NM|GRAA|R|5|10\S\9/L|||||||||||| 
OBX|8|NM|RBC|R|5|10\S\12/L|||||||||||| 
OBX|9|NM|HGB|R|5|g/L|||||||||||| 
OBX|10|NM|MCHC|R|5|g/L|||||||||||| 
OBX|11|NM|MCH|R|5|pg|||||||||||| 
OBX|12|NM|MCV|R|5|fL|||||||||||| 
OBX|13|NM|RDWCV|R|5|%|||||||||||| 
OBX|14|NM|RDWSD|R|5|fL|||||||||||| 
OBX|15|NM|HCT|R|5|%|||||||||||| 
OBX|16|NM|PLT|R|5|10\S\9/L|||||||||||| 
OBX|17|NM|MPV|R|5|fL|||||||||||| 
OBX|18|NM|PDW|R|5|fL|||||||||||| 
OBX|19|NM|PCT|R|5|%|||||||||||| 
OBX|20|NM|PLCR|R|5|%|||||||||||| 
OBX|21|NM|WBC|L|1|10\S\9/L|||||||||||| 
OBX|22|NM|LYMP|L|1|%|||||||||||| 
OBX|23|NM|MONP|L|1|%|||||||||||| 
OBX|24|NM|GRAP|L|1|%|||||||||||| 
OBX|25|NM|LYMA|L|1|10\S\9/L|||||||||||| 
OBX|26|NM|MONA|L|1|10\S\9/L|||||||||||| 
OBX|27|NM|GRAA|L|1|10\S\9/L|||||||||||| 
OBX|28|NM|RBC|L|1|10\S\12/L|||||||||||| 
OBX|29|NM|HGB|L|1|g/L|||||||||||| 
OBX|30|NM|MCHC|L|1|g/L|||||||||||| 
OBX|31|NM|MCH|L|1|pg|||||||||||| 
OBX|32|NM|MCV|L|1|fL|||||||||||| 
 30 
OBX|33|NM|RDWCV|L|1|%|||||||||||| 
OBX|34|NM|RDWSD|L|1|fL|||||||||||| 
OBX|35|NM|HCT|L|1|%|||||||||||| 
OBX|36|NM|PLT|L|1|10\S\9/L|||||||||||| 
OBX|37|NM|MPV|L|1|fL|||||||||||| 
OBX|38|NM|PDW|L|1|fL|||||||||||| 
OBX|39|NM|PCT|L|1|%|||||||||||| 
OBX|40|NM|PLCR|L|1|%|||||||||||| 
Reply message: 
MSH|^~\&|LIS||||20170725165005||ACK^R01|2|P|2.3.1||||||Unicode||| 
MSA|AA|201707251||||| 
L-J Quality control result message: 
MSH|^~\&||Rayto|||20170725154352||ORU^R01|201707252|P|2.3.1||||Q||Unicode||| 
PID|1|||||||||||||||||||||||||||||| 
OBR|1||2|LJ QCR|||2014-12-0317:09:00||||||||||||||||||||||||||||||||||||||||| 
OBX|1|NM|WBC||22.2|10\S\9/L|||||F||||||| 
OBX|2|NM|LYMP||24.4|%|||||F||||||| 
OBX|3|NM|MONP||19.8|%|||||F||||||| 
OBX|4|NM|GRAP||55.8|%|||||F||||||| 
OBX|5|NM|LYMA|||10\S\9/L|||||F||||||| 
OBX|6|NM|MONA|||10\S\9/L|||||F||||||| 
OBX|7|NM|GRAA|||10\S\9/L|||||F||||||| 
OBX|8|NM|RBC||0.00|10\S\12/L|||||F||||||| 
OBX|9|NM|HGB||0|g/L|||||F||||||| 
OBX|10|NM|MCHC||0|g/L|||||F||||||| 
OBX|11|NM|MCH||0.0|pg|||||F||||||| 
OBX|12|NM|MCV||0.0|fL|||||F||||||| 
OBX|13|NM|RDWCV||0.0|%|||||F||||||| 
OBX|14|NM|RDWSD||0.0|fL|||||F||||||| 
OBX|15|NM|HCT||0.0|%|||||F||||||| 
OBX|16|NM|PLT||0|10\S\9/L|||||F||||||| 
OBX|17|NM|MPV||0.0|fL|||||F||||||| 
OBX|18|NM|PDW||0.0|fL|||||F||||||| 
OBX|19|NM|PCT||0.000|%|||||F||||||| 
OBX|20|NM|PLCR||0.0|%|||||F||||||| 
Reply message: 
MSH|^~\&|LIS||||20170725165005||ACK^R01|3|P|2.3.1|||||| Unicode||| 
MSA|AA|201707252||||| 
 
X-B Quality control setting message: 
MSH|^~\&|Hemaray86|Rayto|||20130517165306||ORU^R01|201305172|P|2.3.1||||Q||UNICODE||| 
OBR||||XB QCS||20130517|||||||||||||| Setter |||||||||||||||||||||||||||| 
OBX|1|NM|MCHC|R|344|g/L|||||||||||| 
OBX|2|NM|MCH|R|29|pg||N|||||||||| 
 31 
OBX|3|NM|MCV|R|84.3|fL|||||||||||| 
OBX|4|NM|MCHC|L|30|g/L|||||||||||| 
OBX|5|NM|MCH|L|2|pg|||||||||||| 
OBX|6|NM|MVC|L|6|fL|||||||||||| 
Reply message: 
MSH|^~\&|LIS||||20130517165006||ACK^R01|4|P|2.3.1||||||UNICODE||| 
MSA|AA|201305172||||| 
 
X-B Quality control result message: 
MSH|^~\&||Rayto|||20130520145612||ORU^R01|201305203|P|2.3.1||||Q||UNICODE||| 
OBR|1||01|XB QCR||20130517|||||||||||||| Examining Physician |||||||||||||||||||||||||||| 
OBX|1|NM|MCHC||321|g/L|||||F||||||| 
OBX|2|NM|MCH||28.5|pg|||||F||||||| 
OBX|3|NM|MCV||87.9|fL|||||F||||||| 
Reply message: 
MSH|^~\&|LIS||||20130520145708||ACK^R01|5|Q|2.3.1||||||UNICODE||| 
MSA|AA|201305203||||| 
 
X-R Quality control setting message: 
MSH|^~\&||Rayto|||20170725154524||ORU^R01|201707253|P|2.3.1||||Q||Unicode||| 
PID|1||20|5||||||||||||||||||||||||||| 
OBR|1||1|XR QCS|||||||||||||||||||||||||||||||||||||||||||| 
Reply message: 
MSH|^~\&|LIS||||20170725160708||ACK^R01|6|P|2.3.1||||||Unicode||| 
MSA|AA|201707253||||| 
 
X-R Quality control result message: 
MSH|^~\&||Rayto|||20170725154619||ORU^R01|201707254|P|2.3.1||||Q||Unicode||| 
PID|1|a01|2|2|||2017-08-02|||||||||||||||||||||||| 
OBR|1||2|XR QCR|||2014-12-0911:35:51||||||||||||||||||||||||||||||||||||||||| 
OBX|1|NM|WBC||5.7|10\S\9/L|||||F||||||| 
OBX|2|NM|LYMP||48.6|%|||||F||||||| 
OBX|3|NM|MONP||34.1|%|||||F||||||| 
OBX|4|NM|GRAP||17.3|%|||||F||||||| 
OBX|5|NM|LYMA||2.8|10\S\9/L|||||F||||||| 
OBX|6|NM|MONA||1.9|10\S\9/L|||||F||||||| 
OBX|7|NM|GRAA||1.0|10\S\9/L|||||F||||||| 
OBX|8|NM|RBC||3.34|10\S\12/L|||||F||||||| 
OBX|9|NM|HGB||86|g/L|||||F||||||| 
OBX|10|NM|MCHC||229|g/L|||||F||||||| 
OBX|11|NM|MCH||25.7|pg|||||F||||||| 
OBX|12|NM|MCV||112.2|fL|||||F||||||| 
OBX|13|NM|RDWCV||10.8|%|||||F||||||| 
OBX|14|NM|RDWSD||60.8|fL|||||F||||||| 
 32 
OBX|15|NM|HCT||37.5|%|||||F||||||| 
OBX|16|NM|PLT||205|10\S\9/L|||||F||||||| 
OBX|17|NM|MPV||9.2|fL|||||F||||||| 
OBX|18|NM|PDW||7.1|fL|||||F||||||| 
OBX|19|NM|PCT||0.189|%|||||F||||||| 
OBX|20|NM|PLCR||35.4|%|||||F||||||| 
Reply message:MSH|^~\&|LIS||||20170722560708||ACK^R01|7|P|2.3.1|||||| Unicode ||| 
MSA|AA|201707254||||| 
Two-way LIS query request sample 
Two-way LIS query request message includes sample number. When the LIS receive the 
request, it will reply with corresponding patient and sample information that be queried. 
Query request message includes 2 segments: MSH and ORC. MSH segment basically is 
the same as sample counting result segment, except for the value of MSH-9 message 
type segment is ORM^O01. Fill receiver number for ORC-3, and fill sample number here, 
fill SampleID1 for this segment in the sample, note that when built-in barcode scanning 
error occurs during automatic sample counting query, the value of sample number 
segment is Invalid. 
Below is query request message sample. 
MSH|^~\&||Rayto|||20170725155043||ORM^O01|201707251|P|2.3.1||||S||Unicode||| 
ORC|RF||2017072501||IP|||||||||||||||| 
 
Two-way LIS query request reply sample 
A query result reply message needs to be responded for LIS received query request 
message. The first two segments of query reply message are MSH and MSA. Fill 
ORR^O02 in MSH-9 message type segment. See the message reply sample part for the 
way of writing characters of MSA segment. If query message succeeds, it will contain PID, 
ORC and OBR segments, patient description and sample message, the information 
description method is the same as that of sample data communication message. The 
ORC segment in successful query message is indispensable, the value of ORC——1 is 
AF, fill query major key for ORC-2 segment, namely sample number. Note that OBR-2 
segment is sample number information, the value should be in consistent with ORC-2 
segment, and otherwise it will be considered as an error message. 
Below is a message sample with successful query result: 
MSH|^~\&|LIS||||20170725161058||ORR^O02|7|P|2.3.1|||||| Unicode ||| 
MSA|AA|201707251||||| 
PID|1||||Lucky|Cat||M|Jack||||||1Y|||||||||||||||| 
ORC|AF|201707251||| 
OBR|1|||||||||||||||||||||||||W|||||||||||||||||||||| 
Below is a reply message sample for failed query, MSA-2 segment indicates reply results, 
the value here is AR, means reject the query operation, the value also can be AE, means 
query operation processing error: 
MSH|^~\&|LIS||||20130520161108||ORR^O02|8|P|2.3.1|||||| Unicode ||| 
MSA|AR|2013040115||||| 
 33 
4 Definition of HL7 Data Type Used 
- Code Element 
<identifier (ST)> ^ <text (ST)> ^ <name of coding system (ST)> ^ <alternate identifier 
(ST)> ^ <alternate text (ST)> ^ <name of alternate coding system (ST)> 
- Composite 
The format is defined by specific segment. 
- Extended composite ID with check digit 
<ID (ST)> ^ <check digit (ST)> ^ <code identifying the check digit scheme employed 
(ID)> ^ < assigning authority (HD)> ^ <identifier type code (IS)> ^ < assigning facility 
(HD)> 
– Encapsulate Data 
<source application (HD) > ^ <type of data (ID) > ^ <data sub type (ID) > ^ <encoding 
 (ID) > ^ <data (ST) > 
- Entity Identifier 
<entity identifier (ST)> ^ <namespace ID (IS)> ^ <universal ID (ST)> ^ <universal ID type 
(ID)> 
– Financial Class 
<financial class (IS) > ^ <effective date (TS) > 
- Hierarchic designator 
<namespace ID (IS)> ^ <universal ID (ST)> ^ <universal ID type (ID)> 
Used only as part of EI and other data types. 
- Formatted text 
This data type is derived from the string data type by allowing the addition of embedded 
formatting instructions. These instructions are limited to those that are intrinsic and 
independent 
of the circumstances under which the field is being used. 
- Coded value for user-defined tables 
The value of such a field follows the formatting rules for an ST field except that it is drawn 
from a site-defined (or user-defined) table of legal values. There shall be an HL7 table 
number associated with IS data types. 
- Coded values for HL7 tables 
The value of such a field follows the formatting rules for an ST field except that it is drawn 
from a table of legal values. There shall be an HL7 table number associated with ID data 
types. 
- Numeric 
A number represented as a series of ASCII numeric characters consisting of an optional 
leading sign (+ or -), the digits and an optional decimal point. 
- Person location 
<point of care (IS )> ^ <room (IS )> ^ <bed (IS)> ^ <facility (HD)> ^ < location status 
(IS )> ^ <person location type (IS)> ^ <building (IS )> ^ <floor (IS )> ^ <location description 
(ST)> 
- Processing type 
 34 
<processing ID (ID)> ^ <processing mode (ID)> 
- Sequence ID 
A non-negative integer in the form of an NM field. The uses of this data type are defined in 
the chapters defining the segments and messages in which it appears. 
– String 
- Time stamp 
YYYY[MM[DD[HHMM[SS[.S[S[S[S]]]]]]]][+/-ZZZZ] ^ <degree of precision> 
- Extended composite ID number and name 
In Version 2.3, use instead of the CN data type. <ID number (ST)> ^ <family name (ST)> 
& 
<last_name_prefix (ST) ^ <given name (ST)> ^ <middle initial or name (ST)> ^ <suffix 
(e.g., JR 
or III) (ST)> ^ <prefix (e.g., DR) (ST)> ^ <degree (e.g., MD) (ST)> ^ <source table (IS)> ^ 
<assigning authority (HD)> ^ <name type code (ID)> ^ <identifier check digit (ST)> ^ 
<code 
identifying the check digit scheme employed (ID)> ^ <identifier type code (IS)> ^ 
<assigning 
facility (HD)> ^ <name representation code (ID)> 
- Extended person name 
In Version 2.3, replaces the PN data type. <family name (ST)> ^ <given name (ST)> & 
<last_name_prefix (ST)> ^ <middle initial or name (ST)> ^ <suffix (e.g., JR or III) (ST)> ^ 
<prefix (e.g., DR) (ST)> ^ <degree (e.g., MD) (IS)> ^ <name type code (ID) > ^ <name 
representation code (ID)> 
- Version identifier 
<version ID (ID)> ^ <internationalization code (CE)> ^ <international version ID (CE)> 
 
 
 35 
5 Message Coding Definition 
1. See the table below for the value meaning of the custom enumerated values in MSH 
segment: 
Table 8 MSH Custom Enumerated Values 
MSH-16 
S – Sample 
C - Calibration 
Q - QC 
 
2. See the table below for the value meaning of the custom enumerated values in MSA 
segment: 
Table 9 MSH Custom Enumerated Values 
MSA-1 
AA - Accept 
AE – Error 
AR – Refuse 
 
3. See the table below for the value meaning of the custom enumerated values in PID 
segment: 
Table 10 PID Custom Enumerated Values 
PID-8 
M - Man 
F – Female 
O - Other 
PID-15 
Y - Year 
M - Month 
D – Day 
H – Hour 
O - Other 
4. See the table below for the value meaning of the custom enumerated values in OBR 
segment: 
 
Table 11 OBR Custom Enumerated Values 
OBR-26 
W - Whole 
P- Peripheral 
PD- Pre-diluted 
 36 
U - Unknown 
 
5. See the table below for the value meaning of the custom enumerated values in OBX 
segment: 
 
Table 12 OBR Custom Enumerated Values 
OBX-4 
L-J, X-B quality control setting message: 
R – Reference 
 L - Limit 
 
X-R quality control result message: 
X – Mean 
 R - Range 
OBX-5 ----- - Invalid value 
OBX-8 
N - Normal 
H - High, higher than the upper limit of reference 
range 
L - Low, lower than the low limit of reference 
range 
 
6. Histogram can be generated by PC terminal operating software, histogram is generated 
according to the impedance channel of the instrument, including WBC histogram, RBC 
histogram and PLT histogram, The following circumstances of graph data transmission 
exist according to software settings: 
(1) No transmission of graph data. 
(2) Transfer bitmap graph data, the data type field value in OBX segment is “ED”, the data 
field value format like “BMP^……bitmap data……”, “BMP” (This value also may be other 
type, such as JPG, PNG etc) means histogram data is in transmission, and the data has 
been conducted Base64 encoding. 
(3) Transfer graph data in binary form, the data type field value in OBX segment is “ED”, 
the data fieldvalue format like “DAT^……binary graph data……”, DAT (or BIN) indicates 
the binary data type defined by the application, and the data has been conducted Base64 
encoding. There are three histograms, each histogram is divided into 256 channels, each 
channel is represented by a byte of data, there are 256 bytes in total, there is data for two 
graphs while transferring the binary graph data of scatter diagram, respectively are 
chromatic index data for main scatter diagram and sub scatter diagram. 
Chromatic index data has defined a scatter diagram includes color type information and 
 37 
brightness information, there are 256 lines and 256 rows for each diagram, each byte 
represents one point. 
 38 
6 Reference Books 
1.《HL7 Interface Standards Version 2.3.1》