Abstract: An apparatus for testing for the presence of a drug is provided. The apparatus includes a first drug testing reagent, a first ampule, a vessel that contains the first ampule, and a fracturing means. The first drug testing reagent contains a controlled substance detecting chemical reagent. The vessel serves as a mixing chamber for mixing the reagents with the test subject fluid. Further, the vessel may include a transparent wall through which changes in coloration of mixtures of test subject fluids and reagents may be viewed. The vessel may also comprise a test subject fluid injection port to allow for the injection of a test subject fluid into the vessel. The vessel may also contain means for fracturing the ampule without damaging or opening the vessel. A method for conducting a drug test is also provided.