This EZ Test ecstasy test kit for MDMA/ecstasy presence utilising the Marquis reagent is the original Ecstasy testing kit and was the first-ever available to the public. It is the first step in the EZ Test range to indicate the presence of Ecstasy.

The Marquis test will turn a different colour for any of the Ecstasy-like substances MDMA, MDA, MDE, MBDB, DXM, 2C-B, Amphetamine plus also DOB, DOI, Methylone, Butylone, Naphyrone and Opiates.