Austin Pathology

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Specific IgE (Blood)

Alternate Names
Specific IgE to-, specific IgE, RAST, allergen testing, allergy test, sIgE, omega 5 gliadin, omega-5 gliadin, O5G, Ara h 2, alpha gal (allergy), alpha-gal (allergy)
Test Code
RAST
Testing Laboratory
Immunology
Specimen Type

Blood

Container Type

Serum tube (Red Cap w. Yellow Insert)

Container Image
Medicare Rebate

No - please complete Patient Financial Consent Form.pdf

Out of Pocket Costs

Please note: Medicare Rebate for this test is subject to conditions. Patients may receive an invoice. (MBS Item Number: 71079 - Subject to Rule 25 (f))

For any particular patient, medicare rebate will cover the performance of no more than 4 allergens (where a mix is treated as one allergen) in a 12 month period.

Testing which exceeds this may cost up to $26.80 per allergen.


For component resolved diagnostics, an out-of-pocket expense will be charged. Financial consent must be obtained from the patient.

Please note: This service is not Medicare rebatable and patients may be charged. Out of Pocket cost - $40.00 per allergen.

Fee above is an indication only; please contact testing laboratory for up-to date cost. 

Ordering Information

A request that only contains "RAST" is general in nature. Specific, individual allergens should be requested where possible, rather than allergen mixes.

All requests will be reviewed by an Immunopathologist/Immunology scientist to optimise the allergens tested, based on the clinical note where available.

If a specific IgE allergen is not documented on the request form, the following specific IgE allergens will be performed for generic "RAST"/allergy requests:

  • A generic "RAST" will test for Grass/Weed pollen mix and D. pteronyssinus (house dust mite) may be performed if there is a clinical note that includes rhinitis.
  • A generic "RAST" will test for Grass/Weed pollen mix, D. pteronyssinus and Aspergillus may be performed if there is a clinical note that includes asthma.

Please note that in both children and adults, testing to individual food allergens is preferred to prevent unnecessary avoidance of multiple food groups. Food mixes (including staple, seafood, nut mixes) will no longer be performed, in agreement with clinical allergy guidelines.


 The current component list includes:

  • Ara h 2 (Peanut, 2S albumin)
  • Omega-5-gliadin (Wheat)
  • Alpha-gal
  • Ana o 3 (Cashew, 2S albumin)
  • Cor a 9 (Hazelnut, 11S globulin)
  • Cor a 14 (Hazelnut, 2S albumin)
  • Bet v 1 (Birch, PR-10)
  • Tri a 14 (Wheat, nsLTP)
Collection Instructions

Minimum volume required 1 mL serum (at least 200ul per allergen tested)

Transport Instructions
Transport ambient at room temperature
Storage Instructions
Store refrigerated at 4°C
Testing Frequency
Twice per week
Min Test Volume
1mL
Add On Test Suitability

This test can be added up to 7 days from collection, subject to sample availability.

Container ID
S, SP
CSR Instructions

Instructions for: Heidelberg Specimen Reception

  • Aliquot to be placed in the Immunology rack.
Laboratory Instructions
None
Accredited Test
Yes