Test Information

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BasoFunction HRT Iohexol

Test Code: 501417

Cpt Code:

86352 (x1)

Clinical Utility

The BasoFunction test may be useful with patients who have a suggestive history of adverse reactions to the indicated allergen and for whom skin testing is not appropriate or available.


Cell Setup: Peripheral blood leukocytes are enriched from heparinized whole blood and stimulated with fMLP Basophil Activation Test, allergen (BasoFunction Test) or buffer alone. Following a brief culture the supernatant containing secreted histamine is separated from the cells. Histamine Test: A validated histamine ELISA quantifies histamine that was secreted by any stimulated control. Viracor-IBT Laboratories determined the performance characteristics of this test. This test has not been cleared or approved for diagnostic use by the U.S. Food and Drug Administration.

Assay Range

The reference range varies for each allergen

Causes For Rejection

Hemolyzed, frozen or refrigerated blood is not acceptable and will be rejected for testing. Do Not use Lithium Heparin tubes

Turnaround Time

Setup Schedule: Basophil Activation M-F, ELISA portion: Mon, Tues, Thurs. TAT: 3-4 Business days from receipt of specimen


Ship OVERNIGHT. Samples are received Monday thru Friday ONLY. Specimen MUST BE received within 48 hours of draw.

Specimen Information

whole blood

NY approved. 8-10 mL whole blood (for 5 antigens) collected and shipped in original sodium heparin (green top) tube. Keep blood at room temperature at all times. Specimen must arrive within 48 hours of draw. Samples are to be shipped by overnight delivery. Samples are received Monday through Friday. Patients taking calcineurin inhibitors should stop their medication 72 hours prior to draw. Patients taking prednisone should stop medication for 2 weeks prior to draw.

48 hours ambient

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