The PDQ centrifuge, dedicated to the standardization of platelet sample preparation, reduces process time to five minutes. Platelet-rich plasma is available in 30 seconds, platelet-poor plasma in 120 seconds and platelet-free plasma in 180 seconds. Optimized for consistent sample quality, the three process cycles offer control and precision without any measurable platelet activation. The PDQ has been validated for platelet function testing. It accepts evacuated specimen collection and aliquot tubes, and may be used as a companion to any light transmission aggregometer engaged in platelet function testing.