Instructions

Freeze platelet poor aliquot within 2 hours of collection.
Requires its own separate aliquot.

Double-spun specimens (platelet-poor plasma) are critical for accurate results.

Aliquot must be from appropriately filled 3.2% sodium citrate tube to acquire the appropriate 9:1 blood to anticoagulant ratio that is critical for valid results 

Patient must not be receiving heparin or Coumadin therapy.