Transport: 0.25 mL serum at 2-8°C for one allergen. Add 0.1 mL for each allergen ordered. (Min: 0.25 mL + 0.04 mL for each allergen ordered) Submit specimen in an ARUP Standard Transport Tube.
Pediatric Collection/Transport: 0.25 mL serum plus 0.04 mL for each allergen ordered at 2-8°C.
Remarks: Multiple specimen tubes and multiple patient encounters should be avoided. Separate serum from cells ASAP.
Unacceptable Conditions: Hemolyzed, icteric or lipemic specimens.
Stability: After separation from cells: Ambient: 2 days; Refrigerated: 2 weeks; Frozen: 1 year
Reference Interval:
Less than 0.10 kU/L: No significant level detected 0.10-0.34 kU/L: Clinical relevance undetermined 0.35-0.70 kU/L: Low 0.71-3.50 kU/L: Moderate 3.51-17.50 kU/L: High 17.51 kU/L or Greater: Very High
Interpretive Data:
Allergen results of 0.10-0.34 kU/L are intended for specialist use as the clinical relevance is undetermined. Although increasing ranges are reflective of increasing concentrations of allergen-specific IgE, this may not correlate with the degree of clinical response or skin testing when challenged with a specific allergen. The correlation of allergy laboratory results with clinical history and in vivo reactivity to specific allergens is essential. A negative test may not rule out clinical allergy or even anaphylaxis.