Hair identification drug abuse behavior is an appraisal method that has been developed in the legal inspection department in recent years and has a particularly high practicability and universality.

Drug components or metabolites in drug users are used in the synthesis of tissue components during hair growth, so by identifying the components of hair, it is possible to quickly determine whether a suspect has drug use.

There are many extraction methods for hair components, and the grinding extraction is the most efficient and accurate. By grinding the hair into a powder form, the surface area of the hair can be greatly increased, and the keratin protein can be sufficiently destroyed, so that the solvent can penetrate into the hair medullary layer and the cortex layer inside the hair to perform sufficient dissolution extraction, and then the extraction solution is detected or not. The drug component can be quickly identified.