LOINC

LOINC Code 1274-0: O NOS Ag RBC Aggl Ql (RBC BPU)

1274-0 is a LOINC code used to identify O NOS Ag RBC Aggl Ql (RBC BPU) 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 O NOS Ag. It is commonly used with the system or sample type RBC^BPU.

Reviewed by HealthAssure Clinical TeamUpdated 21 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 O NOS 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: DEPRECATED
  • Method: Aggl RBC

What it does not mean

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

Key facts

  • Deprecated O group [Presence] on Red Blood Cells from Blood product unit
  • O NOS Ag
  • Agg; Agglut; Agglutination; Antigen; Antigens; Arbitrary concentration; BLOOD BANK; Blood product unit; Blood Product Unit (Pack); Erythrocytes; Ordinal; Other; Point in time; QL; Qual; Qualitative; Random; Red blood cells; Red blood corpusles; Screen

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.

Common synonyms

O NOS Ag RBC Aggl Ql (RBC BPU)Deprecated O group [Presence] on Red Blood Cells from Blood product unitDeprecated O Ag RBC BPU QlO NOS AgBLDBKO NOS antigen, Blood Product UnitACnc

Frequently asked questions

Code details

Code1274-0
SystemLOINC
Display nameO NOS Ag RBC Aggl Ql (RBC BPU)
DescriptionO NOS Ag
Short nameDeprecated O Ag RBC BPU Ql
ComponentO NOS Ag
PropertyACnc
TimingPt
System (specimen)RBC^BPU
ScaleOrd
MethodAggl RBC
ClassBLDBK
StatusDEPRECATED

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.42

Consumer names

O NOS antigen, Blood Product Unit

Part names

O NOS AgACncPtRBC^BPUOrdAggl RBCAgArbitrary ConcentrationPoint 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.