Can a instant drug test kits be tampered with to produce a false positive?

Not the kit itself. But a person can have a false positive due to interactions from other drugs...such as pantaloc...which will trigger a false positive for marijuana, poppyseed will give a false positive for opiates...and there are a few more. Best way to look at this is to not be at risk...Can a instant drug test kits be tampered with to produce a false positive?
it is highly unlikely. if the test is opened other than right in front of you I guess there could be the slimmest chance that someone could put something on the test stick. easiest way to remedy that is to have everything done right in front you, opening the kit, peeing, testing, waiting on results.Can a instant drug test kits be tampered with to produce a false positive?
In my experience, NO. Ya know you can send the 'sample' to the lab, there is an address provided on the box and they will tell you what the real results are down to the amount of drugs taken, in grams.This usually takes up to 14 days to hear the results. Good luck with all that!
ya