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.

LOINCActiveBoth

LOINC Code 41508-3: S. agalactiae Ag Ql (Body fld)

Name: LOINC Code 41508-3: S. agalactiae Ag Ql (Body fld)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

41508-3 is a LOINC code used to identify S. agalactiae Ag Ql (Body fld) 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 Streptococcus agalactiae Ag. It is commonly used with the system or sample type Body fld.

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 Streptococcus agalactiae Ag. It is commonly used with the system or sample type Body fld.

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: ACTIVE
Order vs observation: Both

What it does not mean

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

Key facts

Streptococcus agalactiae Ag [Presence] in Body fluid
Streptococcus agalactiae Ag
Antigen; Antigens; B/F; BF; bod; Bodies; Body fluid; Body fluid, unsp; Fl; Fld; FLU; Fluid; GBS; Gp B Strep; Group B; Group B Strep; ID; Infectious Disease; InfectiousDisease; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; S agalactiae; Screen; Steptococcus Group B; Strep; Strep B; Strep group B; Strept; Streptococci group B

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 S. agalactiae Ag Ql (Body fld) (41508-3)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

S. agalactiae Ag Ql (Body fld)Streptococcus agalactiae Ag [Presence] in Body fluidGp B Strep Ag Fld QlStreptococcus agalactiae AgMICROStreptococcus agalactiae antigen, Body fluidPrThr

Frequently asked questions

Code details

Code41508-3

SystemLOINC

Display nameS. agalactiae Ag Ql (Body fld)

DescriptionStreptococcus agalactiae Ag

Short nameGp B Strep Ag Fld Ql

ComponentStreptococcus agalactiae Ag

PropertyPrThr

TimingPt

System (specimen)Body fld

ScaleOrd

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.16

Last changed2.56

Consumer names

Streptococcus agalactiae antigen, Body fluid

Part names

Streptococcus agalactiae AgPrThrPtBody fldOrdPresence or ThresholdPoint in time (spot)Body fluid

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.