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.

LOINCBoth

LOINC Code 25505-9: Pituitary glycoprotein hormone.alpha subunit Qn (S)

Name: LOINC Code 25505-9: Pituitary glycoprotein hormone.alpha subunit Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

25505-9 is a LOINC code used to identify Pituitary glycoprotein hormone.alpha subunit Qn (S) 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 Pituitary glycoprotein hormone.alpha subunit. It is commonly used with the system or sample type Ser.

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 Pituitary glycoprotein hormone.alpha subunit. It is commonly used with the system or sample type Ser.

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: Both

What it does not mean

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

Key facts

Pituitary glycoprotein hormone.alpha subunit [Units/volume] in Serum
Pituitary glycoprotein hormone.alpha subunit
Alfa; APGH; a-PGH; Arbitrary Concentration; Chemistry; gG; Glycoprot; Glycoproteins; GP; Horm; Pituitary glycoproteins; Pitutary; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; 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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Pituitary glycoprotein hormone.alpha subunit Qn (S) (25505-9)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Pituitary glycoprotein hormone.alpha subunit Qn (S)Pituitary glycoprotein hormone.alpha subunit [Units/volume] in Seruma-PGH Ser-aCncPituitary glycoprotein hormone.alpha subunitCHEMPituitary glycoprotein hormone.alpha subunit, BloodACnc

Frequently asked questions

Code details

Code25505-9

SystemLOINC

Display namePituitary glycoprotein hormone.alpha subunit Qn (S)

DescriptionPituitary glycoprotein hormone.alpha subunit

Short namea-PGH Ser-aCnc

ComponentPituitary glycoprotein hormone.alpha subunit

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassCHEM

StatusDISCOURAGED

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.00

Last changed2.69

Consumer names

Pituitary glycoprotein hormone.alpha subunit, Blood

Part names

Pituitary glycoprotein hormone.alpha subunitACncPtSerQnArbitrary ConcentrationPoint in time (spot)Serum

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.