LOINCObservation

LOINC Code 25456-5: Lactoglobulin IgA RAST class (S)

25456-5 is a LOINC code used to identify Lactoglobulin IgA RAST class (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 Lactoglobulin Ab.IgA.RAST class. 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 Lactoglobulin Ab.IgA.RAST class. 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

What it does not mean

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

Key facts

  • Deprecated Lactoglobulin IgA Ab RAST class [Presence] in Serum
  • Lactoglobulin Ab.IgA.RAST class
  • ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; IgA RAST; Immune globulin A; Immunoglobulin A; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; 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

Lactoglobulin IgA RAST class (S)Deprecated Lactoglobulin IgA Ab RAST class [Presence] in SerumDeprecated Lactoglob IgA RAST QlLactoglobulin Ab.IgA.RAST classALLERGYLactoglobulin IgA RAST classPrThr

Frequently asked questions

Code details

Code25456-5
SystemLOINC
Display nameLactoglobulin IgA RAST class (S)
DescriptionLactoglobulin Ab.IgA.RAST class
Short nameDeprecated Lactoglob IgA RAST Ql
ComponentLactoglobulin Ab.IgA.RAST class
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
ClassALLERGY
StatusDEPRECATED
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.00
Last changed2.75

Consumer names

Lactoglobulin IgA RAST class

Part names

Lactoglobulin Ab.IgA.RAST classPrThrPtSerOrdPresence or ThresholdPoint 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 25456-5 | HealthAssure