Yes its virtually impossible to test positive from secondhand smoke.

And you cannot test positive from merely handling weed. Urine tests look for drug metabolites. The weed must be ingested and metabolized by the body in order for it to be detected on a U/A.

A "faint" line in the T window still counts as a negative. If the T window remains blank after 4-5 minutes, its a positive.


Its not all uncommon for longtime heavy users to test positive for 60 days or more. Theres actually a report of an individual that took 105 days to finally test negative. Of course this person was a HEAVY user for over a decade, weighed in on the wrong side of 375 lbs and indulged in zero physical activity.