You guys are talking about testing your QF. I've called to verify my batch is good - however you mention strips to check for creatine levels. As far as I know, according the to instructions for QF, you aren't supposed to open and close and re-open to use. You can warm up multiple times as long as it hasn't been opened
You must be thinking of a different product. The QF instructions state no such thing.

The QF instructions are found on Spectrum Labs' (the QF manufacturer) website urineluck.com.

Ive tested dozens of QF batches, and repeatedly, for nearly a decade with no problems as a result of opening, closing, and reopening of the bottles.
Burnt Toast Reviewed by Burnt Toast on . Question about Quickfix I may have to use it. I bought some a couple months ago, and I have a potential opportunity. Not sure if I will need to be tested yet, but I have a couple of questions: - It's already been discussed that most labs don't test that it's fake/synthetic - however, what if I go to Aurora, the nearest medical clinic by me? I did a test there a couple years ago. And it seemed like the nurse just stirred it with a stick. This was for Target. If there is a possibility of being able to tell it's fake, Rating: 5