| abstract |
Drug abuse compounds comprising the substances of the classes amphetamines, barbiturates, narcotics and tranquilizers, and the specific compounds including morphine, dilauded, cocaine and codeine in body fluid samples are qualitatively and quantitatively detected by the use of a carrier matrix having specific physical properties relating to strength and to absorbency of dry chemicals. The matrix being impregnated with dry staining agents in precise amounts which were prepared in accordance with unique procedures whereby pH insensitivity and unique color change sensitivities to test fluids of 1,000 to 10,000 times the sensitivities realized with thin layer chromatography staining reagents are achieved without the use of ion-exchange resins or color intensifiers. |