Sure screen cassete type

does the delution method posted by N2 work on the sure screen cassete type(for cannabis)?or does the asprin cause a false positive?

Larger Product Picture - SureScreen Diagnostics

this test does not check for adulterants-you can drink straight water and pass. drink until you pee clear.

yeah I was thinking about that,the lady that gives the test doesnt know nothing about drugscreens lol.she doesnt even know that you can dilute the test,she thinks it foolproof(sp?) haha