Aspirin Reactivity Units
Must be drawn in special sodium citrate tubes. Call Tech
Services (356-3527) for collection kit.
|Special Coagulation Tube
Must be collected in a (2 mL) special collection tube.
If specimen is over 4 hours old and not drawn in special collection
tubes. Improper sample collection (platelet activation) or patient's
exposure to other anti-platelet agents.
Must be hand-delivered to laboratory within 2 hours
of collection; specimen cannot be sent using pneumatic
tube system. Keep at room temperature.
24 hrs/day, 7 days a week, including holidays.
1 hour (upon receipt in laboratory)
620-672 ARU (pre-drug administration) Therapeutic range: <550 ARU
Platelet dysfunction consistent with aspirin has been detected.
Patients who have been treated with Glycoprotein IIb/IIIa inhibitors
should not be tested until platelet function has recovered. This time
period is approximately 14 days after discontinuation of abciximab
(ReoPro) and up to 48 hours after discontinuation of eptifibatide
(Integrilin) and tirofiban (Aggrastat).
Improper sample collection (platelet activation) or patient's exposure
to other anti-platelet agents.
The VerifyNow system incorporates the agonist arachidonic acid to