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.

LOINCActiveObservation

LOINC Code 1639-4: Testosterone pre 5000 U HCG IM [Mass/Vol]

Name: LOINC Code 1639-4: Testosterone pre 5000 U HCG IM [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:26.377Z

1639-4 is a LOINC code used to identify Testosterone pre 5000 U HCG IM [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^pre 5000 U HCG IM. 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^pre 5000 U HCG IM. 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: Observation

What it does not mean

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

Key facts

Testosterone [Mass/volume] in Serum or Plasma --pre 5000 U HCG IM
Testosterone^pre 5000 U HCG IM
Before; CHEMISTRY.CHALLENGE TESTING; Chorionic gonadotropin stimulation test; Level; Mass concentration; Pl; Plasma; Plsm; Point in time; pre 5000 U CG IM; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Testo; Testos; Testost

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 pre 5000 U HCG IM [Mass/Vol]Testosterone [Mass/volume] in Serum or Plasma --pre 5000 U HCG IMTestost pre 5000 U CG IM SerPl-mCncTestosterone^pre 5000 U HCG IMCHALTestosterone before 5000 U HCG intramuscular, BloodMCnc

Frequently asked questions

Code details

Code1639-4

SystemLOINC

Display nameTestosterone pre 5000 U HCG IM [Mass/Vol]

DescriptionTestosterone^pre 5000 U HCG IM

Short nameTestost pre 5000 U CG IM SerPl-mCnc

ComponentTestosterone^pre 5000 U HCG IM

PropertyMCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassCHAL

Example unitsng/mL

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0

Last changed2.34

Consumer names

Testosterone before 5000 U HCG intramuscular, Blood

Part names

Testosterone^pre 5000 U HCG IMMCncPtSer/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.