14 days
Basophil Activation Testing is performed, measuring expression of the CD63 surface marker on basophils from whole blood by flow cytometry.1 Multiple potential basophil donors undergo rigorous BAT characterization alongside control samples.
0.00–10.60
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This test measures the extent to which patient serum activates pooled donor basophils in an indirect basophil activation test (PD-BAT for Chronic Urticaria).
Serum
1mL
Gel-barrier tube or red-top tube
If a red-top tube is used, transfer separated serum to a plastic transport tube
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 2 months |