What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 43739-2: Blood group Ag (RBC BPU) [Interp]

Name: LOINC Code 43739-2: Blood group Ag (RBC BPU) [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

43739-2 is a LOINC code used to identify Blood group Ag (RBC BPU) [Interp] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Blood group Ag. It is commonly used with the system or sample type RBC^BPU.

Reviewed by HealthAssure Clinical TeamUpdated 25 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Blood group Ag. It is commonly used with the system or sample type RBC^BPU.

When is it used?

Used in lab systems, EHRs, and clinical data exchange.
May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
Status: ACTIVE
Order vs observation: Observation

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

Blood group Ag [Interpretation] on Red Blood Cells from Blood product unit
Blood group Ag
Antigen; Antigens; BLOOD BANK; Blood product unit; Blood Product Unit (Pack); Erythrocytes; Hematology; Heme; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; Nominal; Point in time; Random; Red blood cells; Red blood corpusles

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Blood group Ag (RBC BPU) [Interp] (43739-2)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Blood group Ag (RBC BPU) [Interp]Blood group Ag [Interpretation] on Red Blood Cells from Blood product unitBlood group Ag RBC BPU-ImpBlood group AgBLDBKBlood group antigen, Blood Product UnitImp

Frequently asked questions

Code details

Code43739-2

SystemLOINC

Display nameBlood group Ag (RBC BPU) [Interp]

DescriptionBlood group Ag

Short nameBlood group Ag RBC BPU-Imp

ComponentBlood group Ag

PropertyImp

TimingPt

System (specimen)RBC^BPU

ScaleNom

ClassBLDBK

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.17

Last changed2.73

Consumer names

Blood group antigen, Blood Product Unit

Part names

Blood group AgImpPtRBC^BPUNomImpression/interpretation of studyPoint in time (spot)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.