LOINCActiveBoth

LOINC Code 25987-9: Testosterone Free RIA [Moles/Vol]

25987-9 is a LOINC code used to identify Testosterone Free RIA [Moles/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 Testosterone.free. 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 Testosterone.free. 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: RIA

What it does not mean

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

Key facts

  • Testosterone Free [Moles/volume] in Serum or Plasma by Radioimmunoassay (RIA)
  • Testosterone.free
  • Chemistry; FR; Level; Non-protein bound; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; RADIOIMMUNOASSAY; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Substance concentration; Testo; Testos; Testost; Testost Free; Testosterone.unconjugated; UniversalLabOrders

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

Testosterone Free RIA [Moles/Vol]Testosterone Free [Moles/volume] in Serum or Plasma by Radioimmunoassay (RIA)Testost Free SerPl RIA-sCncTestosterone.freeCHEMFree testosterone, BloodSCnc

Frequently asked questions

Code details

Code25987-9
SystemLOINC
Display nameTestosterone Free RIA [Moles/Vol]
DescriptionTestosterone.free
Short nameTestost Free SerPl RIA-sCnc
ComponentTestosterone.free
PropertySCnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
MethodRIA
ClassCHEM
Example unitsmmol/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.00
Last changed2.73

Consumer names

Free testosterone, Blood

Part names

Testosterone.freeSCncPtSer/PlasQnRIATestosterone FreeSubstance ConcentrationPoint in time (spot)Serum or PlasmaRadioimmunoassay (RIA)

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 25987-9 | HealthAssure