Bescot Healthcare Canada: ASAEffect™ The ASA Effect™ test kit is an enzyme-linked immunoassay (ELISA) to determine levels of 11-dehydrothromboxane B2 (11dhTxB2) in human urine, which aids in the qualitative detection of the effects of ASA in apparently healthy individuals post ingestion. Asaeffect.com~Site InfoWhoisTrace RouteRBL Check