LOINCActiveObservation

LOINC Code 102405-8: Lemon IgE RAST (S) [Presence]

102405-8 is a LOINC code used to identify Lemon 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 Citrus limon 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 Citrus limon 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

  • Lemon IgE Ab [Presence] in Serum by Radioallergosorbent test (RAST)
  • Citrus limon Ab.IgE
  • ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; f208; Immune globulin E; Immunoglobulin E; Lemon; 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

Lemon IgE RAST (S) [Presence]Lemon IgE Ab [Presence] in Serum by Radioallergosorbent test (RAST)Lemon IgE RASTCitrus limon Ab.IgEALLERGYLemon allergy testPrThr

Frequently asked questions

Code details

Code102405-8
SystemLOINC
Display nameLemon IgE RAST (S) [Presence]
DescriptionCitrus limon Ab.IgE
Short nameLemon IgE RAST
ComponentCitrus limon 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

Lemon allergy test

Part names

Citrus limon Ab.IgEPrThrPtSerSemiQnRASTLemon (Citrus limon) 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.

LOINC Code 102405-8 | HealthAssure