Is it possible to test using body hair if hair from the head is not available for at-home hair follicle tests?
Yes, some people attempt to circumvent this through shaving their heads. It is also possible to use body hair to do hair drug testing, but since body hair grows slower, the head hair window of detection measures will not apply to body hair. Hence with body hair it possible to detect drug history up to 1year as compared to 90 days for head hair.