Thc is in your detectable in saliva 1 hour after smoking up to 24 hours, for like a joint a day, and up to four days for stoners, like this fabio_13 guy, I checked every web site I could find, did some math on weight and age compared to how fast the average body burns fat cells,(thc is stored in fat cells), and kgb texted it to find out this info. Trust me, I have nothing better to do with my time people. Peace out
You can't. You can only wait the 72 hrs. (for heavy use) or 48 hrs for normal use. Don't ask what's normal - I don't know! Normal for some people would be heavy for others!