Test Code PFA Platelet Function Assay (PFA)/Closure Time, Blood
Specimen Requirements
Container/Tube: Light blue-top (3.2% sodium citrate) tube
Specimen Volume: Full 4.5-mL tube of whole blood
Collection Instructions: Immediately invert tube and mix gently 8 times. Clotted blood or traumatic draw is not acceptable.
Note: Label specimen appropriately.
Specimen Transport Temperature
Ambient
Performing Laboratory
The Valley Hospital