When I was in the Marines, we would take a drug test by way of urine on a monthly basis it seemed.
When I went for a job a couple of years back, they took a blood test to check for drugs.
At my current job, they actually cut some hair off and send it for a drug test. I keep my hair short, so they had to trim some off of my legs.
Which tests are more accurate? To give an example, if I were to smoke marijuana today, which test would pick it up the longest time from today?
Oh, by the way, I do not smoke marijuana and am not asking questions to circumvent the legal system. I am just curious as to the methods that are used, and what is the most reliable.
This site spells out each type of test and how they work.
Hair tests detect use over a longer period of time – they won’t pick up results from the past week, but will detect use that took place quite a length of time (years, even) before the test was administered.
Urine tests pick up any use that occurred in about the past week, although habitual users will generally test positive even if they’ve abstained for a week prior.
Perfect, exactly what I was looking for. Thanks!