Allergen-Specific Immunoglobulin E
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Allergen profile, radioallergosorbent test (RAST), ImmunoCAP Specific immunoglobulin E (IgE).
To assist in identifying environmental allergens responsible for causing allergic reactions.
Serum collected in a gold-, red-, or red/gray-top tube.
(Method: Radioimmunoassay or fluorescence enzyme immunoassay [FEIA])
|RAST Scoring Method (Radioimmunoassay) and ImmunoCAP Scoring Guide (FEIA)||Conventional and SI Units Allergen-Specific IgE|
|Specific IgE Allergen Antibody Level||kU/L|
|Absent or undetectable allergy||Less than 0.35|
|Very high allergy||17.6–50|
|Very high allergy||51–100|
|Very high allergy||Greater than 100|