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LOINC Code 59236-0: Free PSA/Total PSA (Periton fld) [Mass fraction]

59236-0 is a LOINC code used to identify Free PSA/Total PSA (Periton fld) [Mass fraction] 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.free/Prostate specific Ag.total. It is commonly used with the system or sample type Periton fld.

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.free/Prostate specific Ag.total. It is commonly used with the system or sample type Periton fld.

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

  • Prostate Specific Ag Free/Prostate specific Ag.total in Peritoneal fluid
  • Prostate specific Ag.free/Prostate specific Ag.total
  • Ascites; Ascitic fluid; Ascitis; Chemistry; fPSA; FR; Kallikrein 3; Mass fraction; Non-protein bound; P-30 antigen; Percent; Peritoneal fluid; Point in time; Prt; PS; PSA; PSA Free; QNT; Quan; Quant; Quantitative; Random; Seminin; Spec; Tot; Totl; 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

Free PSA/Total PSA (Periton fld) [Mass fraction]Prostate Specific Ag Free/Prostate specific Ag.total in Peritoneal fluidPSA Free MFr PrtProstate specific Ag.free/Prostate specific Ag.totalCHEMFree PSA/Total Prostate Specific Antigen (Total PSA), Peritoneal fluidMFr

Frequently asked questions

Code details

Code59236-0
SystemLOINC
Display nameFree PSA/Total PSA (Periton fld) [Mass fraction]
DescriptionProstate specific Ag.free/Prostate specific Ag.total
Short namePSA Free MFr Prt
ComponentProstate specific Ag.free/Prostate specific Ag.total
PropertyMFr
TimingPt
System (specimen)Periton fld
ScaleQn
ClassCHEM
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.32
Last changed2.40

Consumer names

Free PSA/Total Prostate Specific Antigen (Total PSA), Peritoneal fluid

Part names

Prostate specific Ag.free/Prostate specific Ag.totalMFrPtPeriton fldQnMass fractionPoint in time (spot)Peritoneal fluid

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.