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.

LOINC

LOINC Code 8066-3: Cardiolipin IgM EIA Qn (S)

Name: LOINC Code 8066-3: Cardiolipin IgM EIA Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:03.793Z

8066-3 is a LOINC code used to identify Cardiolipin IgM EIA 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 Cardiolipin Ab.IgM. 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. 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: EIA

What it does not mean

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

Key facts

Deprecated Cardiolipin IgM Ab [Units/volume] in Serum by Immunoassay
Cardiolipin Ab.IgM
ABS; Aby; ACA; aCL; Antby; Anti; Antibodies; Antibody; Anticardiolipin; Arbitrary concentration; Autoantibodies; Autoantibody; Cardio; Cardiolip; Cardiolipn; Cardiolpn; CL; COAGULATION; ELFA; ELISA; Enzyme immunoassay; IAA; Immune globulin M; Immunoglobulin M; 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

Cardiolipin IgM EIA Qn (S)Deprecated Cardiolipin IgM Ab [Units/volume] in Serum by ImmunoassayDeprecated Cardiolipin IgM Ser EIA-aCncCardiolipin Ab.IgMCOAGCardiolipin IgM antibody, BloodACnc

Frequently asked questions

Code details

Code8066-3

SystemLOINC

Display nameCardiolipin IgM EIA Qn (S)

DescriptionCardiolipin Ab.IgM

Short nameDeprecated Cardiolipin IgM Ser EIA-aCnc

ComponentCardiolipin Ab.IgM

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

MethodEIA

ClassCOAG

StatusDEPRECATED

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0h(2)

Last changed2.69

Consumer names

Cardiolipin IgM antibody, Blood

Part names

Cardiolipin Ab.IgMACncPtSerQnEIACardiolipin IgMArbitrary ConcentrationPoint in time (spot)SerumImmunoassay (EIA)

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.