Figure 2. Aspirin response signature (ARS) is associated with platelet function in patients at risk for cardiovascular disease.
Patients treated with 81mg/day aspirin were assessed with the VerifyNow Aspirin device.(9) Three categories of individuals were profiled by microarray based on their aspirin response units (ARU): Aspirin resistant (AR, ARU > 550); High normal (HN, 500 < ARU < 550); Aspirin sensitive (AS, ARU < 550). ARS values are for each group are plotted and compared using two-sample t-tests. P-values are one-sided.