Quick view K2/Spice Single Drug Test Dip Card 25/Box The DrugCheck® K2/Spice on-site test is the most sensitive K2 screening device on the market, detecting JWH-018 and JWH-073 at 25 ng/mL. The -018 and -073 compounds are used in the majority of synthetic marijuana products. In fact, 98% of K2... MSRP: Was: Now: $89.75 Add to Cart Compare