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 31905-3: N. gonorrhoeae Ag Ql (Genital specimen)

Name: LOINC Code 31905-3: N. gonorrhoeae Ag Ql (Genital specimen)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

31905-3 is a LOINC code used to identify N. gonorrhoeae Ag Ql (Genital specimen) 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 Neisseria gonorrhoeae Ag. It is commonly used with the system or sample type Genital.

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 Neisseria gonorrhoeae Ag. It is commonly used with the system or sample type Genital.

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

Neisseria gonorrhoeae Ag [Presence] in Genital specimen
Neisseria gonorrhoeae Ag
Antigen; Antigens; GC; Gen; Genital tract; Gono; Gonorrhea; ID; Infectious Disease; InfectiousDisease; Microbiology; N gonorrhoea; N gonorrhoeae; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Urogenit; Urogenital

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 N. gonorrhoeae Ag Ql (Genital specimen) (31905-3)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

N. gonorrhoeae Ag Ql (Genital specimen)Neisseria gonorrhoeae Ag [Presence] in Genital specimenN gonorrhoea Ag Genital QlNeisseria gonorrhoeae AgMICRONeisseria gonorrhoeae antigen, Genital specimenPrThr

Frequently asked questions

Code details

Code31905-3

SystemLOINC

Display nameN. gonorrhoeae Ag Ql (Genital specimen)

DescriptionNeisseria gonorrhoeae Ag

Short nameN gonorrhoea Ag Genital Ql

ComponentNeisseria gonorrhoeae Ag

PropertyPrThr

TimingPt

System (specimen)Genital

ScaleOrd

ClassMICRO

StatusDISCOURAGED

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.07

Last changed2.56

Consumer names

Neisseria gonorrhoeae antigen, Genital specimen

Part names

Neisseria gonorrhoeae AgPrThrPtGenitalOrdPresence or ThresholdPoint in time (spot)

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.