Test Overview
Test Methodology

Ex-Vivo Challenge and cell culture.

Test Usage

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.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday, Wednesday, Friday
Analytic Time

2 - 3 days

Soft Order Code
VCUI
MiChart Code
CU Index
Synonyms
  • CUIND
  • IBT Chronic Urticaria Index
Laboratory
Sendout
Reference Laboratory
Viracor Eurofins 2103
Section
Special Testing
Specimen Requirements
Collection

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. Collect specimen in an SST or red top tube. Centrifuge and aliquot serum into a plastic vial within 2 hours of collection. Store at room temperature up to 1 week or freeze for longer storage.

Yellow Top Tube
Normal Volume
3 mL serum
Storage Temperature
Room temperature, refrigerated, or frozen specimens are acceptable.
Additional Information

Test sent to Viracor Eurofins.

Billing
CPT Code
86352
Fee Code
AA185
Resources