Employment Testing
Hair Sampling
Dr. Gelfound uses Psychemedics Corporation technology, the nation's leading drug testing company using hair for the detection of drug abuse. Psychemedics Corporation is the only firm to hold U.S. and foreign patents for the detection of drugs in hair.
The presence of drugs in hair is based on a simple scientific fact. Drugs which are ingested circulate in a person's bloodstream which nourishes the developing hair follicle. Trace amounts of the drugs become entrapped in the core of the hair shaft in amounts roughly proportional to those ingested. These trace amounts of drugs remain in the hair as it grows out from the head at a rate of approximately 1/2 inch per month. Drug residues cannot be washed or flushed out and are stable over time. Thus, a drug history can be obtained from the hair of any individual. courtesy of Psychemedics Corporation
