PLATELET ANTIBODIES, INDIRECT (IgG, IgM, IgA)
Collect SST, allow to clot for 30 minutes then promptly centrifuge. Send 2 mL serum in pour off tube or original collection tube, must be refrigerated.
Flow Cytometry (FC)
Room temp: Unacceptable, Refrigerated: 21 days, Frozen: Unacceptable
2-5 days, Performed: Tuesday & Saturday
Screen for the presence of circulating antibodies to platelets (not bound to the platelet surface), that may be associated with the destruction of platelets.