LOINCActiveObservation

LOINC Code 102909-9: S. aureus enterotoxin C IgE RAST (S) [Presence]

102909-9 is a LOINC code used to identify S. aureus enterotoxin C 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 Staphylococcus aureus enterotoxin C 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 Staphylococcus aureus enterotoxin C 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

  • Staphylococcus aureus enterotoxin C IgE Ab [Presence] in Serum by Radioallergosorbent test (RAST)
  • Staphylococcus aureus enterotoxin C Ab.IgE
  • ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Etx; Immune globulin E; Immunoglobulin E; m223; o71; Point in time; PR; Radioallergosorbent test; Random; Rh Blood Group System; Rm223; S aureus; S aureus Etx; S aureus Etx C; Serum; SmQn; SR; St a SEC; Staph; Staphylococcal enterotoxin

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

S. aureus enterotoxin C IgE RAST (S) [Presence]Staphylococcus aureus enterotoxin C IgE Ab [Presence] in Serum by Radioallergosorbent test (RAST)S aureus Etx C IgE RASTStaphylococcus aureus enterotoxin C Ab.IgEALLERGYStaphylococcus aureus enterotoxin C allergy testPrThr

Frequently asked questions

Code details

Code102909-9
SystemLOINC
Display nameS. aureus enterotoxin C IgE RAST (S) [Presence]
DescriptionStaphylococcus aureus enterotoxin C Ab.IgE
Short nameS aureus Etx C IgE RAST
ComponentStaphylococcus aureus enterotoxin C 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

Staphylococcus aureus enterotoxin C allergy test

Part names

Staphylococcus aureus enterotoxin C Ab.IgEPrThrPtSerSemiQnRASTStaphylococcus aureus enterotoxin C 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.