Bixby

KW, I been there and done that. It don't work!
http://www.marijuana.com/urine-testi...ub-member.html

Here is the operative word "seconds". Allow me to finish your explanation:

1- rub thumb against pants for a few seconds
2- hold it against the temp strip on the cup for a couple seconds
3- that'll get the temp up a little...FOR A FEW SECONDS

Your odds are lowered if you have to rely on rubbing the temp strip as you are describing.

The danger here is that a less experienced person will mistakenly consider this the most basic important tip to remember simply because they didn't take the time to read and understand. Or they are getting stoned thinking their QF has them aceing the test, their first test. How would you feel if someone went in there, started rubbing, and it didn't work? The window of opportunity is maybe 10-15 seconds at most.

Sure, it's an option, but more of a gimmick with limited value in a real-life test situation.