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 42734-4: Cardiolipin IgM B2GP1 independent (S) [MoM]

Name: LOINC Code 42734-4: Cardiolipin IgM B2GP1 independent (S) [MoM]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:28.129Z

42734-4 is a LOINC code used to identify Cardiolipin IgM B2GP1 independent (S) [MoM] 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 Cardiolipin Ab.IgM.B2GP1 independent. 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 Cardiolipin Ab.IgM.B2GP1 independent. 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: Observation

What it does not mean

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

Key facts

Cardiolipin IgM Ab B2GP1 independent [Multiple of the median] in Serum
Cardiolipin Ab.IgM.B2GP1 independent
ABS; Aby; ACA; aCL; Antby; Anti; Antibodies; Antibody; Anticardiolipin; Autoantibodies; Autoantibody; Beta 2 Glycoprotein 1; Cardio; Cardiolip; Cardiolipn; Cardiolpn; CL; COAGULATION; Hematology; Heme; IgM B2GP1 indep; Immune globulin M; Immunoglobulin M; MoM; Multiple of the median; Point in time; QNT; Quan; Quant; Quantitative; Random; 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

Cardiolipin IgM B2GP1 independent (S) [MoM]Cardiolipin IgM Ab B2GP1 independent [Multiple of the median] in SerumCardiolipin IgM B2GP1 indep MoM SerCardiolipin Ab.IgM.B2GP1 independentCOAGCardiolipin IgM B2GP1 independent, BloodMoM

Frequently asked questions

Code details

Code42734-4

SystemLOINC

Display nameCardiolipin IgM B2GP1 independent (S) [MoM]

DescriptionCardiolipin Ab.IgM.B2GP1 independent

Short nameCardiolipin IgM B2GP1 indep MoM Ser

ComponentCardiolipin Ab.IgM.B2GP1 independent

PropertyMoM

TimingPt

System (specimen)Ser

ScaleQn

ClassCOAG

Example unitsM.o.M

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.16

Last changed2.70

Consumer names

Cardiolipin IgM B2GP1 independent, Blood

Part names

Cardiolipin Ab.IgM.B2GP1 independentMoMPtSerQnCardiolipin IgM B2GP1 independentMultiple of the medianPoint 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.