Product Search Search Effective Health Care website Submit search Search Tip: Use double quotes around phrases to rank exact matches higher in the result list. 2 results Testing of CYP2C19 Variants and Platelet Reactivity for Guiding Antiplatelet Treatment Systematic Review Archived September 25, 2013 Testing of CYP2C19 Variants and Platelet Reactivity for Guiding Antiplatelet Treatment Research Protocol Archived November 22, 2011