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.

LOINCObservation

LOINC Code 32599-3: Lutropin 30 Min post Unsp challenge [Mass/Vol]

Name: LOINC Code 32599-3: Lutropin 30 Min post Unsp challenge [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:18.901Z

32599-3 is a LOINC code used to identify Lutropin 30 Min post Unsp challenge [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 Lutropin^30M post XXX challenge. 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 Lutropin^30M post XXX challenge. 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: DISCOURAGED
Order vs observation: Observation

What it does not mean

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

Key facts

Lutropin [Mass/volume] in Serum or Plasma --30 minutes post XXX challenge
Lutropin^30M post XXX challenge
30M p chal; After; CHEMISTRY.CHALLENGE TESTING; ICSH; Interstitial cell-stimulating hormone; Interstitual cell stimulating hormone; Leutinizing hormone; Level; LH; Luteinizing hormone; Lutenin; Lutenizing hormone; Mass concentration; Ovulation test; p chal; Pl; Plasma; Plsm; Point in time; PST; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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

Lutropin 30 Min post Unsp challenge [Mass/Vol]Lutropin [Mass/volume] in Serum or Plasma --30 minutes post XXX challengeLH 30M p chal SerPl-mCncLutropin^30M post XXX challengeCHALLutropin (LH; Luteinizing Hormone) 30 min after challenge, BloodMCnc

Frequently asked questions

Code details

Code32599-3

SystemLOINC

Display nameLutropin 30 Min post Unsp challenge [Mass/Vol]

DescriptionLutropin^30M post XXX challenge

Short nameLH 30M p chal SerPl-mCnc

ComponentLutropin^30M post XXX challenge

PropertyMCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassCHAL

Example unitsug/uL

StatusDISCOURAGED

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.08

Last changed2.70

Consumer names

Lutropin (LH; Luteinizing Hormone) 30 min after challenge, Blood

Part names

Lutropin^30M post XXX challengeMCncPtSer/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.