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CU Index®

Test Code: 2103

Cpt Code:

86352 (x1)

Clinical Utility

Patients with a chronic form of urticaria who are positive (> 10) with the CU index® have an autoimmune basis for their disease. A positive result does not indicate which autoantibody (anti-IgE, anti-FceRI or anti-FceRII) is present.

Procedure

Ex-Vivo Challenge and cell culture: Donor blood cells are incubated with patient serum, a negative control and a positive control. Following the ex-vivo challenge, the cells are centrifuged and the supernatant is recovered for assay of histamine released. Histamine Analysis: Using a quantitative enzyme immunoassay, the histamine released into the supernatant is measured and compared to the total histamine in the basophils. This test has not been cleared or approved for diagnostic use by the U.S. Food and Drug Administration.

Assay Range

1-50

Turnaround Time

Setup: M-W-F. TAT 2-3 business days from receipt of specimen

Specimen Information

serum

NY approved. Collect 3-5 mL whole blood in a serum separator tube (SST). Centrifuge specimen within 2 hours of draw to pellet cells below the gel. (NOTE: Patients taking calcineurin inhibitors should stop their medication for 72 hours prior to draw. Patients taking prednisone should be off their medication for 2 weeks prior to draw.)

Stability
>1 week frozen

Disclaimer

Specimens are approved for testing in New York only when indicated in the Specimen Information field above.

The CPT codes provided are based on Viracor-IBT's interpretation of the American Medical Association's Current Procedural Terminology (CPT) codes and are provided for general informational purposes only. CPT coding is the sole responsibility of the billing party. Questions regarding coding should be addressed to your local Medicare carrier. Viracor-IBT assumes no responsibility for billing errors due to reliance on the CPT codes illustrated in this material.

 

Patent No.:US 7,824,877

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