Chronic Urticaria Index (Urticaria-Inducing Activity) CUAUTO

Method(s) Semi-Quantitative Ex Vivo Challenge/Cell Culture/Quantitative Enzyme-Linked Immunosorbent Assay
Specimen Required
Collect

One 5 mL plain red top tube.

Transport

Allow specimen to clot completely at room temperature before centrifuging. 1 mL serum, frozen (Min: 0.5 mL). Separate serum from cells ASAP or within 2 hours of collection.

Remarks 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

After separation from cells: Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 year (avoid repeated freeze/thaw cycles)

Unacceptable Conditions

Specimens other than serum. Contaminated, grossly hemolyzed or lipemic specimens.

Schedule Mon, Fri
Billing Code 5011287
CPTCode 86352
Preferred Specimen Collection Device(s)
Reference Interval

See laboratory report.

No Appointment Necessary
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12 Patient Service Centers in Central New York.

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