LOINC

LOINC Code 865-6: A3 Ab RBC Aggl Ql (S)

865-6 is a LOINC code used to identify A3 Ab RBC Aggl Ql (S) 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 A3 Ab. It is commonly used with the system or sample type Ser.

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 A3 Ab. It is commonly used with the system or sample type Ser.

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 A3 Ab
  • A3 Ab
  • ABS; Aby; Agg; Agglut; Agglutination; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; BLOOD BANK; Ordinal; Point in time; QL; Qual; Qualitative; Random; Screen; Serum; SR

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

A3 Ab RBC Aggl Ql (S)Deprecated A3 AbDeprecated A3 Ab Ser QlA3 AbBLDBKA3 antibody, BloodACnc

Frequently asked questions

Code details

Code865-6
SystemLOINC
Display nameA3 Ab RBC Aggl Ql (S)
DescriptionA3 Ab
Short nameDeprecated A3 Ab Ser Ql
ComponentA3 Ab
PropertyACnc
TimingPt
System (specimen)Ser
ScaleOrd
MethodAggl RBC
ClassBLDBK
StatusDEPRECATED

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.36

Consumer names

A3 antibody, Blood

Part names

A3 AbACncPtSerOrdAggl RBCArbitrary ConcentrationPoint in time (spot)Serum

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.

LOINC Code 865-6 | HealthAssure