Test Code PFA Platelet Function Assay (PFA)/Closure Time, Blood

Important Note

For outpatients, this test must be collected at the Valley Health System - Ridgewood Campus Outpatient Laboratory only.

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