CU Index

• CPT Code: 86352
• LOINC: 55141-6
• Specimen Type: Red nongel
• Frequency: Setup: Mon-Fri; analytic time 3 days
• Instructions: 2mL serum from red gel or nongel tube, refrigerated. Separate from cells within 2 hrs of collection and send in plastic vial. Min 0.5mL.
• Text: The CU Index test is the second generation Functional Anti-FcER test. Patients with a CU Index >or=10 have basophil reactive factors in their serum which supports an autoimmune basis for disease. No prednisone for 2 wks prior to test. No calcineurin inhibitors 72 hrs prior.
• Methodology: Ex Vivo Challenge, Cell Culture and Histamine Analysis