LOINCActiveBoth

LOINC Code 51005-7: Testosterone.free+weakly bound High sensitivity method [Mass/Vol]

51005-7 is a LOINC code used to identify Testosterone.free+weakly bound High sensitivity method [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 Testosterone.free+weakly bound. 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 Testosterone.free+weakly 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
  • Method: High sensitivity

What it does not mean

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

Key facts

  • Testosterone.free+weakly bound [Mass/volume] in Serum or Plasma by High sensitivity method
  • Testosterone.free+weakly bound
  • Associated; bnd; Chemistry; FR; HS; Level; Mass concentration; Non-protein bound; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Testo; Testos; Testost; Testost Free; Testosterone free+weakly bound; Testosterone.bioavailable; Testosterone.free+WB; Testosterone.unconjugated; 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

Testosterone.free+weakly bound High sensitivity method [Mass/Vol]Testosterone.free+weakly bound [Mass/volume] in Serum or Plasma by High sensitivity methodTestosterone.free+WB SerPl HS-mCncTestosterone.free+weakly boundCHEMFree+Weakly-bound testosterone, BloodMCnc

Frequently asked questions

Code details

Code51005-7
SystemLOINC
Display nameTestosterone.free+weakly bound High sensitivity method [Mass/Vol]
DescriptionTestosterone.free+weakly bound
Short nameTestosterone.free+WB SerPl HS-mCnc
ComponentTestosterone.free+weakly bound
PropertyMCnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
MethodHigh sensitivity
ClassCHEM
Example unitsng/dL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.22
Last changed2.70

Consumer names

Free+Weakly-bound testosterone, Blood

Part names

Testosterone.free+weakly boundMCncPtSer/PlasQnHigh sensitivityMass ConcentrationPoint in time (spot)Serum or PlasmaHigh sensitivity method

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 51005-7 | HealthAssure