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 83112-3: Prostate specific Ag IA [Mass/Vol]

Name: LOINC Code 83112-3: Prostate specific Ag IA [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:10.306Z

83112-3 is a LOINC code used to identify Prostate specific Ag IA [Mass/Vol] 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 Prostate specific Ag. 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 Prostate specific Ag. 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

Prostate specific Ag [Mass/volume] in Serum or Plasma by Immunoassay
Prostate specific Ag
This term was created for, but is not limited in use to, bioMerieux's VIDAS TPSA assay, which is intended for the quantitative measurement of prostate specific antigen (PSA) in human serum or plasma.
Antigen; Antigens; Chemistry; EIA; ELFA; ELISA; Enzyme immunoassay; Genitourinary; GU; IAA; Kallikrein 3; Level; Mass concentration; MEIA; Oncology; P-30 antigen; Pl; Plasma; Plsm; Point in time; PS; PSA; QNT; Quan; Quant; Quantitative; Random; Seminin; SerP; SerPl; SerPlas; Serum; Serum or plasma; Spec; SR; SUDS; Tumor marker; URO; Urology

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

Prostate specific Ag IA [Mass/Vol]Prostate specific Ag [Mass/volume] in Serum or Plasma by ImmunoassayPSA SerPl IA-mCncProstate specific AgCHEMProstate specific antigen, BloodMCnc

Frequently asked questions

Code details

Code83112-3

SystemLOINC

Display nameProstate specific Ag IA [Mass/Vol]

DescriptionProstate specific Ag

Short namePSA SerPl IA-mCnc

ComponentProstate specific Ag

PropertyMCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

MethodIA

ClassCHEM

Example unitsng/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.58

Last changed2.73

Consumer names

Prostate specific antigen, Blood

Part names

Prostate specific AgMCncPtSer/PlasQnIAMass 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.