If you were under the care of a physician and not under the influence at work, you should be fine.
Yes, if it is true you are using drugs and fail the test. I suggest you stop if you do use.
Taking drugs
No. Drugs that are used for anesthesia are not tested for in drug tests.
Not for weed, but if you have used any other drugs you can fail.
If you fail the drug test, you will not be arrested. Being under the influence of drugs, alone, is not a crime. The crime is having possession of drugs, which a drug test, alone, does not prove. However, you will certainly not be hired for the job.
Yes if they are checking for a broad range of drugs.
Depending on the drug, it could cause your performance at your job to go down the toilet. Failing a drug test would almost definitely get you fired. And if you became a true addict, your job would come after getting and using your drug of choice, causing you to ultimately fail.
The only way that you can fail a drug test is to do drugs yourself.
Simple - don't do drugs ! If you fail it - it's YOUR fault !
If you have taken marijuana then you will fail a test for maijuana.
There are no magic potions that will let you do drugs and still pass a drug test. The only way not to fail a drug test is not to do the drugs ... or move to a state where it's legal.
any type of drug!