CU Index®†

Last Modified: 5/4/2018 7:31:49 AM

Medical Necessity Documentation:  
Client Notes:  
Patient Preparation: 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.
Specimen Requirements: 1.0 mL Serum in a SST Gold Top Tube
Collection Instructions: Centrifuge and separate from cells within 2 hours from collection
Transport & Storage: Temperature/Stability:

24 hours Ambient
1 week Refrigerated (preferred)
1 month Frozen

Reference Range:


Critical Ranges:  
Test Comments:  
Methodology: Not Applicable
Clinical Significance: 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
Custom Panel: No


Turn Around Time: 5 to 8 days
Days Performed: Monday, Wednesday, Friday
Sites Performed: Eurofins (Previously Viracor)
PHL Test Code: MSOT
EPIC Test Code:
Send Out Test Code: 2103
Alternate Test Names: Anti IgE Receptor Antibody ; Auto Immune Chronic Urticaria Test; CU Autoantibody Signature ™; Functional Anti-FceR; Histamine Release ; IgE Receptor Ab
Included Tests:  
CPT Coding: 86352

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