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.

LOINCActiveBoth

LOINC Code 83082-8: Cancer Ag 125 IA Qn

Name: LOINC Code 83082-8: Cancer Ag 125 IA Qn
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:10.306Z

83082-8 is a LOINC code used to identify Cancer Ag 125 IA Qn 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 Cancer Ag 125. It is commonly used with the system or sample type Ser/Plas.

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 Cancer Ag 125. It is commonly used with the system or sample type Ser/Plas.

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

Cancer Ag 125 [Units/volume] in Serum or Plasma by Immunoassay
Cancer Ag 125
This term was created for, but is not limited in use to, bioMerieux's VIDAS CA 125 II assay, which is intended for the quantitative measurement of the OC 125 antigenic determinants in human serum or plasma.
Arbitrary concentration; CA; CA 125; Cancer Ag125; Cancer antigen 125; Carbohydrate antigen; Carbohydrate antigen 125; Chemistry; EIA; ELFA; ELISA; Enzyme immunoassay; Gyn; Gynecology; IAA; MEIA; OB; ObGyn; Obstetrics; OC125; Oncology; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; SUDS; Tumor marker

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

Cancer Ag 125 IA QnCancer Ag 125 [Units/volume] in Serum or Plasma by ImmunoassayCancer Ag125 SerPl IA-aCncCancer Ag 125CHEMCancer Ag 125, BloodACnc

Frequently asked questions

Code details

Code83082-8

SystemLOINC

Display nameCancer Ag 125 IA Qn

DescriptionCancer Ag 125

Short nameCancer Ag125 SerPl IA-aCnc

ComponentCancer Ag 125

PropertyACnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

MethodIA

ClassCHEM

Example unitsarb U/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.58

Last changed2.73

Consumer names

Cancer Ag 125, Blood

Part names

Cancer Ag 125ACncPtSer/PlasQnIAArbitrary ConcentrationPoint in time (spot)Serum or PlasmaImmunoassay

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.