LOINCActiveBoth

LOINC Code 56538-2: Beta 2 glycoprotein 1 Ab IA Qn (S)

56538-2 is a LOINC code used to identify Beta 2 glycoprotein 1 Ab IA Qn (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 Beta 2 glycoprotein 1 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 Beta 2 glycoprotein 1 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: ACTIVE
  • Order vs observation: Both
  • Method: IA

What it does not mean

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

Key facts

  • Beta 2 glycoprotein 1 Ab [Units/volume] in Serum by Immunoassay
  • Beta 2 glycoprotein 1 Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; APOH; Apolipoprotein H; Arbitrary concentration; Autoantibodies; Autoantibody; B; B2 Glycoprot1; B2 glycoprotein 1; B2GPI; B2-GPI; COAGULATION; EIA; ELFA; ELISA; Enzyme immunoassay; gG; Glycoprot; Glycoproteins; GP; Hematology; Heme; i; IAA; II; MEIA; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR; SUDS

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

Beta 2 glycoprotein 1 Ab IA Qn (S)Beta 2 glycoprotein 1 Ab [Units/volume] in Serum by ImmunoassayB2 Glycoprot1 Ab Ser IA-aCncBeta 2 glycoprotein 1 AbCOAGBeta 2 glycoprotein 1 antibody, BloodACnc

Frequently asked questions

Code details

Code56538-2
SystemLOINC
Display nameBeta 2 glycoprotein 1 Ab IA Qn (S)
DescriptionBeta 2 glycoprotein 1 Ab
Short nameB2 Glycoprot1 Ab Ser IA-aCnc
ComponentBeta 2 glycoprotein 1 Ab
PropertyACnc
TimingPt
System (specimen)Ser
ScaleQn
MethodIA
ClassCOAG
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.29
Last changed2.73

Consumer names

Beta 2 glycoprotein 1 antibody, Blood

Part names

Beta 2 glycoprotein 1 AbACncPtSerQnIAArbitrary ConcentrationPoint in time (spot)SerumImmunoassay

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 56538-2 | HealthAssure