comment: >
  
  If there was a test that existed that could identify whether you were still under the influence of weed as opposed to just having some in your system, would you be opposed to that test being run?
context: Just a side note: I had a job as a medic mostly on construction sites and it involved both pre-employment and post-injury drug tests. It’s not just a weed test. Meth, and especially coke, are also very common to find, and I’d say I found non-negative results for coke maybe 60% as often as I would find them for weed (in a recreational legal state). The reason is obvious in that construction workers know they’re likely to get tested at unpredictable intervals due to injuries, so more choose things like coke that are out of their systems fast. >
  
  No one seems to be pointing out that we are testing for THC-COOH a metabolite of weed that happens to be fat Soluble and why it stays in the human body for so low. No other drug on the 5 or 10 panel is tested this way. You can do a blood test for Delta 9 THC but it's not detectable within 48 hours.