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LOINC Code 1590-9: Lutropin 15 Min post 100 g lutropin IV [Mass/Vol]

1590-9 is a LOINC code used to identify Lutropin 15 Min post 100 g lutropin IV [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^15M post 100 g lutropin IV. 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^15M post 100 g lutropin IV. 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: DEPRECATED
  • Order vs observation: Observation

What it does not mean

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

Key facts

  • Deprecated Lutropin [Mass/volume] in Serum or Plasma --15 minutes post 100 g lutropin IV
  • Lutropin^15M post 100 g lutropin IV
  • The dose of 100 g of lutropin is impossible. Must have been a mistake somewhere in the submission process. The drug is prescribed in international units (IU).
  • 15M p 100 g LH IV; 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; 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 15 Min post 100 g lutropin IV [Mass/Vol]Deprecated Lutropin [Mass/volume] in Serum or Plasma --15 minutes post 100 g lutropin IVDeprecated LH 15M p 100 g LH IV SerPLutropin^15M post 100 g lutropin IVCHALLutropin (LH; Luteinizing Hormone) 15 min after 100 g Intravenous Lutropin, BloodMCnc

Frequently asked questions

Code details

Code1590-9
SystemLOINC
Display nameLutropin 15 Min post 100 g lutropin IV [Mass/Vol]
DescriptionLutropin^15M post 100 g lutropin IV
Short nameDeprecated LH 15M p 100 g LH IV SerP
ComponentLutropin^15M post 100 g lutropin IV
PropertyMCnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassCHAL
Example unitsug/uL
StatusDEPRECATED
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.32

Consumer names

Lutropin (LH; Luteinizing Hormone) 15 min after 100 g Intravenous Lutropin, Blood

Part names

Lutropin^15M post 100 g lutropin IVMCncPtSer/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.