LOINCActiveBoth

LOINC Code 106439-3: Whiting IgE RAST [Presence]

106439-3 is a LOINC code used to identify Whiting IgE RAST [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 Whiting Ab.IgE. It is commonly used with the system or sample type Ser/Plas.

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 Whiting Ab.IgE. It is commonly used with the system or sample type Ser/Plas.

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
  • Method: RAST

What it does not mean

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

Key facts

  • Whiting IgE Ab [Presence] in Serum or Plasma by Radioallergosorbent test (RAST)
  • Whiting Ab.IgE
  • ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Immune globulin E; Immunoglobulin E; Pl; Plasma; Plsm; Point in time; PR; Radioallergosorbent test; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; 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

Whiting IgE RAST [Presence]Whiting IgE Ab [Presence] in Serum or Plasma by Radioallergosorbent test (RAST)Whiting IgE RASTWhiting Ab.IgEALLERGYWhiting allergy test, BloodPrThr

Frequently asked questions

Code details

Code106439-3
SystemLOINC
Display nameWhiting IgE RAST [Presence]
DescriptionWhiting Ab.IgE
Short nameWhiting IgE RAST
ComponentWhiting Ab.IgE
PropertyPrThr
TimingPt
System (specimen)Ser/Plas
ScaleSemiQn
MethodRAST
ClassALLERGY
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.79
Last changed2.79

Consumer names

Whiting allergy test, Blood

Part names

Whiting Ab.IgEPrThrPtSer/PlasSemiQnRASTPresence or ThresholdPoint in time (spot)Serum or PlasmaRadioallergosorbent 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.

LOINC Code 106439-3 | HealthAssure