LOINCActiveObservation

LOINC Code 102928-9: C. albicans IgG4 RAST (S) [Presence]

102928-9 is a LOINC code used to identify C. albicans IgG4 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 Candida albicans Ab.IgG4. 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 Candida albicans Ab.IgG4. 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

  • Candida albicans IgG4 Ab [Presence] in Serum by Radioallergosorbent test (RAST)
  • Candida albicans Ab.IgG4
  • ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; C albicans; Cand; Candidiasis; m005; m5; Monilia; Point in time; PR; Radioallergosorbent test; Random; Serum; SmQn; SR; Thrush

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

C. albicans IgG4 RAST (S) [Presence]Candida albicans IgG4 Ab [Presence] in Serum by Radioallergosorbent test (RAST)C albicans IgG4 RASTCandida albicans Ab.IgG4ALLERGYCandida albicans IgG4 antibodyPrThr

Frequently asked questions

Code details

Code102928-9
SystemLOINC
Display nameC. albicans IgG4 RAST (S) [Presence]
DescriptionCandida albicans Ab.IgG4
Short nameC albicans IgG4 RAST
ComponentCandida albicans Ab.IgG4
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

Candida albicans IgG4 antibody

Part names

Candida albicans Ab.IgG4PrThrPtSerSemiQnRASTCandida albicans IgG4Presence 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.