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| 90525:CU (CHRONIC URTICARIA ) INDEX | |||||||||
| Methodology: | ExVivo Challenge / Cell Culture and Histamine Analysis | ||||||||
| Edit Date: | 7/15/2010 | ||||||||
| Performed: | Monday-Friday | ||||||||
| Released: | 48-72 hours after setup at PeaceHealth Laboratories’ reference lab. | ||||||||
| CPT Code: | 86352-90 | ||||||||
| Specimen Collection Details | |||||||||
| Collection: | NOTE: Patients taking clacineurin inhibitors should stop their medication 72 hours prior to draw. One 7.5 mL serum separator tube (SST). |
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| Handling: | Allow to clot, centrifuge and separate serum from cells and pour into a plastic vial. Refrigerate. | ||||||||
| Stability: | 7 days ambient, 14 days refrigerated, or 1 year frozen. | ||||||||
| Standard Volume: | 2 mL serum. | ||||||||
| Minimum Volume: | 1 mL serum. | ||||||||
| Transport: | Refrigerated, or frozen on dry ice. | ||||||||
| Rejection Criteria: | Specimen other than serum.
This test may require insurance company prior authorization before ordering.
Please check the prior authorization list . Failure to gain preauthorization may result in denial of coverage. |
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| Reference Range: | |||||||||||||||||||
| <10.0 Patients with a CU Index ≥ 10 have basophil reactive factors in their serum which supports an autoimmune basis for disease. |
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