LOINCActiveBoth

LOINC Code 63103-6: Swiss Cheese IgG (S) [Mass/Vol]

63103-6 is a LOINC code used to identify Swiss 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 swiss 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 swiss 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

  • Swiss Cheese IgG Ab [Mass/volume] in Serum
  • Cheese swiss Ab.IgG
  • ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; f170; Immune globulin G; Immunoglobulin G; Level; Mass concentration; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR; Swiss Cheese

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

Swiss Cheese IgG (S) [Mass/Vol]Swiss Cheese IgG Ab [Mass/volume] in SerumSwiss Cheese IgG-mCncCheese swiss Ab.IgGALLERGYSwiss cheese IgG antibodyMCnc

Frequently asked questions

Code details

Code63103-6
SystemLOINC
Display nameSwiss Cheese IgG (S) [Mass/Vol]
DescriptionCheese swiss Ab.IgG
Short nameSwiss Cheese IgG-mCnc
ComponentCheese swiss 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

Swiss cheese IgG antibody

Part names

Cheese swiss Ab.IgGMCncPtSerQnSwiss 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.

LOINC Code 63103-6 | HealthAssure