What if a sample of very long hair is submitted, will the laboratory test show drug use for a longer historical period?
Related Questions
- One of my friends told me she had to give a hair sample for a pre-employment drug test. Can a laboratory really test hair for drugs?
- What happens when a sample is before very long hair, laboratory tests show that drug use over a longer period of history?
- What if a historical period of 6 months of drug use is required, can the laboratory test for that?
