check this article i found,about synthentic's

Clerks Caught Advising Use Of Fake Urine For Drug Tests - Nashville News Story - WSMV Nashville


"He said that even though the fake urine is a problem, his firm does catch it, which is what the list shows.

But, he said, the problem occurs when parents or small businesses don't closely watch when the urine is collected.

"They're very vulnerable to this," Black said.

The state Office of Probation and Parole doesn't keep records on how many convicted criminals try to beat drug tests, but it said its collection process is so thorough, fake urine couldn't be used.

"I've tried every drug known to man," said recovering addict Joshuah James, who said he's beaten drug tests plenty of times in his home state of Louisiana, even paying children for their urine and using fake bladders.

He said that's what makes this product so dangerous: If it works, addicts will flock to it.

"If it's that easy to get, why not?" James said.

The key to busting the synthetic urine is the temperature. If it isn't heated correctly, it will be flagged by drug tests.

The collection process is usually where it's caught."