7 - 15 days
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Approximately 40% of patients with chronic urticaria have antibodies to the high affinity IgE receptor (FceR1). Sera from patients with chronic urticaria significantly upregulate basophil CD203c expression as measured by flow cytometry.
0 - 12
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Collect specimen in a red top tube.
Collect specimen in a red top tube. Centrifuge, aliquot serum into a plastic vial within 1 hour of collection and refrigerate up to 7 days or freeze for longer storage.