Cpt Code:86003 (x1)
Clinical UtilityThis assay is used to detect allergen specific-IgE using the ImmunoCAP® FEIA method. In vitro allergy testing is the primary testing mode for allergy diagnosis.
ProcedureThe ImmunoCAP® FEIA method uses as the solid phase a flexible, hydrophobic cellulosic polymer to which allergen has been covalently linked. The advantage of this system is that it has a very high antigen binding capacity when compared to other systems and it has minimal non-specific binding with high total IgE. Viracor-IBT Laboratories provides an optional low range calibrator at 0.1 kU/L and a 0/1 class. This test has been cleared or approved for diagnostic use by the U.S. Food and Drug Administration.
Assay RangeImmunoCAP® Quantitative Scoring Guide: Class IgE (kU/L) Comment 0 <0.10 Negative 0/1 0.10-0.34 Equivocal/Borderline 1 0.35-0.69 Low Positive 2 0.70-3.49 Moderate Positive 3 3.50-17.49 High Positive 4 17.50-49.99 Very High Positive 5 50.00-99.99 Very High Positive 6 >99.99 Very High Positive Note that Viracor-IBT includes an extra calibrator at 0.10 kU/L and uses it to define an optional equivocal class.
Causes For RejectionLipemic samples may lead to rejection.
Turnaround Time1-2 days from specimen receipt.
ShippingShip Monday through Friday. Friday shipments must be labeled for Saturday delivery. All specimens must be labeled with patient's name and collection date. A Viracor-IBT test requisition form must accompany each specimen. Multiple tests can be run on one specimen. Ship specimens FedEx Priority Overnight® to: Viracor-IBT Laboratories, 1001 NW Technology Dr, Lee's Summit, MO 64086.
NY approved. Collect 1-2 mL whole blood in red top tube, centrifuge and transfer 0.5 mL serum into a transfer tube. Ship at ambient or frozen temperature Monday through Friday.