Best place to purchase QF

Hi everyone, I was wondering where is the best place to buy QF online? There are a lot of different sites that sell it and I wanna buy it from somewhere that will give me the genuine product. Also, i'm gonna probably have to take a pre-employment test soon and I want to stock up on it now, so what is QF's shelf life?

QF has a 18-24 month shelf life. As far as a vendor selling a "genuine" product, they dont get any more genuine than the manufacturer, Spectrum Labs. Go to their urineluck website.

Sounds good, thanks for the quick reply.