Tag: hair drug testing
Ask the experts: Under the influence
Is oral fluid is the best drug test specimen type for determining whether an employee is under the influence of drugs – particularly marijuana?
Hair drug testing resources
Quest Diagnostics offers additional resources about hair testing for illicit drug use at HairTesting.com.
Hair testing from a leader in science and service
Hair testing provides up to a 90-day detection of repetitive drug use, which can act as a powerful drug use deterrent.
