LOINCActiveObservation

LOINC Code 103103-8: Galactose-alpha-1,3-galactose (Alpha-Gal) IgE RAST (S) [Presence]

103103-8 is a LOINC code used to identify Galactose-alpha-1,3-galactose (Alpha-Gal) IgE RAST (S) [Presence] 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 Galactose-alpha-1,3-galactose Ab.IgE. 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 Galactose-alpha-1,3-galactose Ab.IgE. 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: Observation
  • Method: RAST

What it does not mean

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

Key facts

  • Galactose-alpha-1,3-galactose (Alpha-Gal) IgE Ab [Presence] in Serum by Radioallergosorbent test (RAST)
  • Galactose-alpha-1,3-galactose Ab.IgE
  • A1; ABS; Aby; Alfa; Allergen; Allergens; ALLERGY TESTING; Alpha-Gal; Alpha-Gal Ab; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Cerebrose; i; III; Immune globulin E; Immunoglobulin E; lone star tick; meat allergy; o215; Point in time; PR; Radioallergosorbent test; Random; Serum; SmQn; 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

Galactose-alpha-1,3-galactose (Alpha-Gal) IgE RAST (S) [Presence]Galactose-alpha-1,3-galactose (Alpha-Gal) IgE Ab [Presence] in Serum by Radioallergosorbent test (RAST)Alpha-Gal IgE RASTGalactose-alpha-1,3-galactose Ab.IgEALLERGYGalactose-alpha-1,3-galactose (Alpha-Gal) allergy testPrThr

Frequently asked questions

Code details

Code103103-8
SystemLOINC
Display nameGalactose-alpha-1,3-galactose (Alpha-Gal) IgE RAST (S) [Presence]
DescriptionGalactose-alpha-1,3-galactose Ab.IgE
Short nameAlpha-Gal IgE RAST
ComponentGalactose-alpha-1,3-galactose Ab.IgE
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleSemiQn
MethodRAST
ClassALLERGY
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.75
Last changed2.75

Consumer names

Galactose-alpha-1,3-galactose (Alpha-Gal) allergy test

Part names

Galactose-alpha-1,3-galactose Ab.IgEPrThrPtSerSemiQnRASTGalactose-alpha-1,3-galactose (Alpha-Gal) IgEPresence or ThresholdPoint in time (spot)SerumRadioallergosorbent test (RAST)

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.