LOINCOrder

LOINC Code 109229-5: Free PSA (Sem) [Measurement]

109229-5 is a LOINC code used to identify Free PSA (Sem) [Measurement] 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. It is commonly used with the system or sample type Semen.

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.free. It is commonly used with the system or sample type Semen.

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: TRIAL
  • Order vs observation: Order

What it does not mean

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

Key facts

Prostate Specific Ag Free [Measurement] in Semen
Prostate specific Ag.free
This term is intended to collate similar measurements for the LOINC SNOMED CT Collaboration in an ontological view. Additionally, it can be used to communicate a laboratory order, either alone or in combination with specimen or other information in the order. It may NOT be used to report back the measured patient value. [https//lo.inc/ce2mb6]
Ejaculate; fPSA; FR; Kallikrein 3; Lab orders; Msmt; Non-protein bound; P-30 antigen; PS; PSA; PSA Free; Sem; Seminal fluid; Seminin; Smn; SMPLS; Spec; 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 (Sem) [Measurement]Prostate Specific Ag Free [Measurement] in SemenPSA Free Msmt SmnProstate specific Ag.freeLABORDERS.ONTOLOGYFree PSA, Semen{Measurement}

Frequently asked questions

Code details

Code109229-5
SystemLOINC
Display nameFree PSA (Sem) [Measurement]
DescriptionProstate specific Ag.free
Short namePSA Free Msmt Smn
ComponentProstate specific Ag.free
Property{Measurement}
Timing-
System (specimen)Semen
Scale-
ClassLABORDERS.ONTOLOGY
StatusTRIAL
Order/ObservationOrder

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.81
Last changed2.81

Consumer names

Free PSA, Semen

Part names

Prostate specific Ag.free{Measurement}-SemenProstate Specific Ag FreeMeasurement

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.

LOINC Code 109229-5 | HealthAssure