Quote Originally Posted by Burnt Toast
Forget the drop-in additives. They will not work on instant-type tests because they take approximately 90 min to destroy the drug metabolites in the urine sample. In addition, labs have been detecting additives on a more frequent basis than ever before. They are detected when the sample gets flagged for excessive nitrites, high chromates, and/or an abnormal pH.

Using synthetic or a clean persons sample as a substitute would be a better bet. Its easier to pour in a sub than fumbling around with additive vials in the bathroom stall.
Thanks for the info, i suppose its not worth risking it. Chances are itd pass by time it gets to the lab but like you say if its gets discovered then im out!
So best to go for the old quickfix synthetic urine?

Cheers