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 2290-5: Follitropin/Lutropin [Molar ratio]

Name: LOINC Code 2290-5: Follitropin/Lutropin [Molar ratio]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

2290-5 is a LOINC code used to identify Follitropin/Lutropin [Molar ratio] 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 Follitropin/Lutropin. 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 Follitropin/Lutropin. 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

Follitropin/Lutropin [Molar ratio] in Serum or Plasma
Follitropin/Lutropin
Chemistry; Follicle stimulating hormone; FSH; ICSH; Interstitial cell-stimulating hormone; Interstitual cell stimulating hormone; Leutinizing hormone; LH; Luteinizing hormone; Lutenin; Lutenizing hormone; Ovulation test; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; Scrto; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Substance concentration ratio; Substance ratio

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Follitropin/Lutropin [Molar ratio] (2290-5)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Follitropin/Lutropin [Molar ratio]Follitropin/Lutropin [Molar ratio] in Serum or PlasmaFSH/LH SerPl-sRtoFollitropin/LutropinCHEMFollitropin (FSH; Follicle Stimulating Hormone)/Lutropin, BloodSRto

Frequently asked questions

Code details

Code2290-5

SystemLOINC

Display nameFollitropin/Lutropin [Molar ratio]

DescriptionFollitropin/Lutropin

Short nameFSH/LH SerPl-sRto

ComponentFollitropin/Lutropin

PropertySRto

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassCHEM

StatusDISCOURAGED

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0

Last changed2.73

Consumer names

Follitropin (FSH; Follicle Stimulating Hormone)/Lutropin, Blood

Part names

Follitropin/LutropinSRtoPtSer/PlasQnSubstance RatioPoint 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.