Incredible Cutting Hair For Drug Test Ideas. During the test, the technician or collector will cut. The sample must be 1.5 inches long and about as thick as a pencil.
The typical hair sample (3.0 cm cut close. Web hair follicle drug tests involve removing a small hair sample for laboratory testing. Web a hair drug test, also known as a hair strand test or a hair follicle test, involves analysing samples of head hair or body hair for the presence of drugs and their metabolites.
