I had a positive test for MDMA on a pharmacy test after smoking high purity crystal methamphetamine.. not a hint of MDMA- I was very surprised.I bought 3 of the tests used by NSW cops to see how they work. I fucked up the first go but the second showed negative 12 hours after meth and the third showed negative while I was high as fuck on MDMA.
There is a product number difference between the official law enforcement version and the one civilians can buy but ad far as I can reaearch they are exactly the same thing.
You can bet the first time I get pulled over though their kit will work just fine!
I think the road side tests pick up THC a lot easier than Methamphetamines, but they test for both absolutely. If your on heroin or cocaine you are safe in Victoria, NSW and Queensland from roadside drug testing assuming your gear isn't adulterated with an amphetemine/methamphetamine