LOINCActiveBoth

LOINC Code 6412-1: G. lamblia Ag IA Ql (Stl)

6412-1 is a LOINC code used to identify G. lamblia Ag IA Ql (Stl) 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 Giardia lamblia Ag. It is commonly used with the system or sample type Stool.

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 Giardia lamblia Ag. It is commonly used with the system or sample type Stool.

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
  • Method: IA

What it does not mean

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

Key facts

  • Giardia lamblia Ag [Presence] in Stool by Immunoassay
  • Giardia lamblia Ag
  • Antigen; Antigens; Beaver fever; Bowel movement; EIA; ELFA; ELISA; Enzyme immunoassay; Faecal; Faeces; Fecal; Feces; G duodenalis; G intestinalis; G lamblia; Giardiasis; IAA; ID; Infectious Disease; InfectiousDisease; Lamblia intestinalis; MEIA; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Stl; Stool = Fecal; SUDS; UniversalLabOrders

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

G. lamblia Ag IA Ql (Stl)Giardia lamblia Ag [Presence] in Stool by ImmunoassayG lamblia Ag Stl Ql IAGiardia lamblia AgMICROGiardia lamblia antigen, StoolPrThr

Frequently asked questions

Code details

Code6412-1
SystemLOINC
Display nameG. lamblia Ag IA Ql (Stl)
DescriptionGiardia lamblia Ag
Short nameG lamblia Ag Stl Ql IA
ComponentGiardia lamblia Ag
PropertyPrThr
TimingPt
System (specimen)Stool
ScaleOrd
MethodIA
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0f
Last changed2.73

Consumer names

Giardia lamblia antigen, Stool

Part names

Giardia lamblia AgPrThrPtStoolOrdIAPresence or ThresholdPoint in time (spot)Immunoassay

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.

LOINC Code 6412-1 | HealthAssure