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.

LOINCObservation

LOINC Code 102181-5: Beta lactoglobulin IgE RAST (S) [Presence]

Name: LOINC Code 102181-5: Beta lactoglobulin IgE RAST (S) [Presence]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:17.453Z

102181-5 is a LOINC code used to identify Beta lactoglobulin 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 Beta lactoglobulin 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 Beta lactoglobulin 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: DEPRECATED
Order vs observation: Observation
Method: RAST

What it does not mean

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

Key facts

Deprecated Beta lactoglobulin IgE Ab [Presence] in Serum by Radioallergosorbent test (RAST)
Beta lactoglobulin Ab.IgE
ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; B; B-Lactoglob; f077; f77; Immune globulin E; Immunoglobulin E; nBos d 5; 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

Beta lactoglobulin IgE RAST (S) [Presence]Deprecated Beta lactoglobulin IgE Ab [Presence] in Serum by Radioallergosorbent test (RAST)Deprecated B-Lactoglob IgE RASTBeta lactoglobulin Ab.IgEALLERGYBeta lactoglobulin allergy testPrThr

Frequently asked questions

Code details

Code102181-5

SystemLOINC

Display nameBeta lactoglobulin IgE RAST (S) [Presence]

DescriptionBeta lactoglobulin Ab.IgE

Short nameDeprecated B-Lactoglob IgE RAST

ComponentBeta lactoglobulin Ab.IgE

PropertyPrThr

TimingPt

System (specimen)Ser

ScaleSemiQn

MethodRAST

ClassALLERGY

StatusDEPRECATED

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.75

Last changed2.82

Consumer names

Beta lactoglobulin allergy test

Part names

Beta lactoglobulin Ab.IgEPrThrPtSerSemiQnRASTBeta lactoglobulin 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.