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 33667-7: PSA.protein bound [Mass/Vol]

Name: LOINC Code 33667-7: PSA.protein bound [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

33667-7 is a LOINC code used to identify PSA.protein bound [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.protein bound. It is commonly used with the system or sample type Ser/Plas.

Reviewed by HealthAssure Clinical TeamUpdated 25 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.protein bound. 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

What it does not mean

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

Key facts

Prostate specific Ag.protein bound [Mass/volume] in Serum or Plasma
Prostate specific Ag.protein bound
Complexed PSA is the difference between Total and free PSA
Associated; bnd; Chemistry; Complexed PSA; cPSA; Kallikrein 3; Level; Mass concentration; P-30 antigen; Pl; Plasma; Plsm; Point in time; PR; Prot; PS; PSA; QNT; Quan; Quant; Quantitative; Random; Seminin; SerP; SerPl; SerPlas; Serum; Serum or plasma; Spec; SR; 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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for PSA.protein bound [Mass/Vol] (33667-7)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

PSA.protein bound [Mass/Vol]Prostate specific Ag.protein bound [Mass/volume] in Serum or PlasmaComplexed PSA SerPl-mCncProstate specific Ag.protein boundCHEMPSA.protein bound, BloodMCnc

Frequently asked questions

Code details

Code33667-7

SystemLOINC

Display namePSA.protein bound [Mass/Vol]

DescriptionProstate specific Ag.protein bound

Short nameComplexed PSA SerPl-mCnc

ComponentProstate specific Ag.protein bound

PropertyMCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassCHEM

Example unitsng/mL; ug/L

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.09

Last changed2.73

Consumer names

PSA.protein bound, Blood

Part names

Prostate specific Ag.protein boundMCncPtSer/PlasQnMass ConcentrationPoint in time (spot)Serum or Plasma

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.