Many employers are now implementing drug testing programs in their respective businesses. They use a variety of methods, including hair drug testing. This method works by identifying the drug metabolites that enter the scalp’s blood vessels and are filtered by the hair. The metabolites stay in the hair as some sort of a permanent record of person’s drug use, and that’s why hair drug testing came to be one of the more common types of drug testing these days.
So what goes on during a hair drug test? Here’s a glance at the process.Read More