A rapid test for the qualitative detection of Cotinine, d-Methamphetamine, Morphine, Cocaine in human hair. For medical and other professional in vitro diagnostic use only. Hair detection has unique advantages in the field of drug testing. Hair can provide long-term medication information that is not available in other biological samples such as blood and urine. Hair samples are relatively easy to take, easy to carry, and easy to store for long periods of time. The slow metabolism of drugs in hair can persist for a long time, and these factors provide better conditions for drug analysis.