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 63099-6: American cheese IgG (S) [Mass/Vol]

Name: LOINC Code 63099-6: American cheese IgG (S) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:42.801Z

63099-6 is a LOINC code used to identify American cheese IgG (S) [Mass/Vol] 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 Cheese American Ab.IgG. It is commonly used with the system or sample type Ser.

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 Cheese American 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

American Cheese IgG Ab [Mass/volume] in Serum
Cheese American Ab.IgG
ABS; Aby; Allergen; Allergens; ALLERGY TESTING; American Cheese; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; f122; Immune globulin G; Immunoglobulin G; Level; Mass concentration; 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.

Common synonyms

American cheese IgG (S) [Mass/Vol]American Cheese IgG Ab [Mass/volume] in SerumAmerican Cheese IgG-mCncCheese American Ab.IgGALLERGYAmerican cheese IgG antibodyMCnc

Frequently asked questions

Code details

Code63099-6

SystemLOINC

Display nameAmerican cheese IgG (S) [Mass/Vol]

DescriptionCheese American Ab.IgG

Short nameAmerican Cheese IgG-mCnc

ComponentCheese American Ab.IgG

PropertyMCnc

TimingPt

System (specimen)Ser

ScaleQn

ClassALLERGY

Example unitsug/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.73

Consumer names

American cheese IgG antibody

Part names

Cheese American Ab.IgGMCncPtSerQnAmerican Cheese IgGMass 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.