Comparison of the VerifyNow® Aspirin Test and PRUTest® Platelet Reactivity Tests With Investigational Reagent to Reagents Registered in Japan

Inclusion Criteria: * Males and females 18 years of age or older. * Subjects regularly taking ASA and clopidogrel, for a minimum of 4 days prior to enrollment, or subjects taking no platelet inhibitors including ASA. * Willing to participate and able to understand the study, including their rights and any risks associated with their participation, and sign an informed consent. * Able and willing to donate a blood sample of 15mL. • Exclusion Criteria * Enrolled in any other study that involves an investigational drug and/or device. * Smoked within one hour before blood draw. * Had caffeine within 2 hours before blood draw. * Had meals with high fat content within 8 hours before blood draw. * A platelet count below 92,000/µL, or above 502,000/µL for VerifyNow Aspirin Test.\* * A platelet count below 119,000/µL, or above 502,00/µL for VerifyNow PRUTest.\* * A hematocrit level below 29%, or above 56% for VerifyNow Aspirin Test.\* * A hematocrit level below 33%, or above 52% for VerifyNow PRUTest.\* * Within the past 48 hours, exposure to any of the following drugs: * Antiplatelet/glycoprotein inhibitors \[eptifibatide, tirofiban\] * Any antiplatelet drug except clopidogrel and ASA \[e.g. ticagrelor, prasugrel\]