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 7891-5: G. lamblia IgG Qn (S)

Name: LOINC Code 7891-5: G. lamblia IgG Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

7891-5 is a LOINC code used to identify G. lamblia IgG 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 Giardia lamblia Ab.IgG. 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 Giardia lamblia Ab.IgG. 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: ACTIVE
Order vs observation: Both

What it does not mean

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

Key facts

Giardia lamblia IgG Ab [Units/volume] in Serum
Giardia lamblia Ab.IgG
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Beaver fever; G duodenalis; G intestinalis; G lamblia; Giardiasis; ID; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; Lamblia intestinalis; Microbiology; 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 G. lamblia IgG Qn (S) (7891-5)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

G. lamblia IgG Qn (S)Giardia lamblia IgG Ab [Units/volume] in SerumG lamblia IgG Ser-aCncGiardia lamblia Ab.IgGMICROGiardia lamblia IgG antibody, BloodACnc

Frequently asked questions

Code details

Code7891-5

SystemLOINC

Display nameG. lamblia IgG Qn (S)

DescriptionGiardia lamblia Ab.IgG

Short nameG lamblia IgG Ser-aCnc

ComponentGiardia lamblia Ab.IgG

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0h(2)

Last changed2.73

Consumer names

Giardia lamblia IgG antibody, Blood

Part names

Giardia lamblia Ab.IgGACncPtSerQnGiardia lamblia IgGArbitrary 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.