And secondly - I'm buying the home testing kit tonight from Wal-greens.

I'm going to try it with drinking alot of water over a period of time. Which sorta makes me think it will come up as clean.

I've heard that the home test kits aren't very accurate and give alot of passing grades when in reality the tester isn't clean.

Is there a big difference between these and the Labs - as far as accuracy?