The main ones that come to mind are your typical psychedelics: DMT, psilocybin mushrooms, LSD, mescaline etc. Lots of pharmaseuticals don't show up on tests as well (for obvious reasons). Obviously when looking at medications, opiates and drugs similar to illegal ones will show up on tests.
If its a regular urine test that you buy from Walmart you can probably do prescription drugs..
Shrooms and LSD
Yes, though it depends on what test you are given and what drugs are actually being tested for.
No. Drugs require their own tests, which cost money, and will only be tested for if that is the purpose of testing.
The military tests for illegal and controlled substances.
illegal
Yes I believe it does as it's in medicines as well as illegal drugs proproxophene shows up in tests and it's of the same family...
Typically urine tests are used to detect minuscule amounts of metabolites from illegal drugs, however there are tests for nicotine use. Nicotine is a drug and is no different to those that are illegal.
They can, but this is illegal, you can take it to court if they say this, you could take blood tests, (this is only if you haven't taken any illegal drugs), you can take prescribed drugs.
No, if it is a regular urine drug test then Ritalin should have no effect on the result as it is prescribed for many circumstances, however if specifically tested for Ritalin will show up in drug tests.
no
all the good ones...
Your Mom and Crack
To see whether you have taken illegal drugs recently.