No, but it's not much good for getting high.
No. Robaxin belongs to a class of drugs which is not detectable by this type of test.
No.
Robaxin (Methocarbamol) should not show up on a regular drug test. MOST drug tests are urine and they are only tested for Amphetamines/Methamphetamine, Cocaine, Marijuana, Opiates, and PCP (Phencyclidine) even a 10 panel urine screen tests for the extra 5 Barbituates, Benzos, Methadone, Methaqualone, and Propoxyphene . Robaxin is just a muscle relaxant, it is not a controlled substance (that I know of unless something changed recently), and is not known for abuse. So it should not have any reason to be something that is tested for in a drug test. Usually, a drug test is testing for drugs that are abused. Muscle relaxants do not have a very high abuse rate so it is not regularly tested for.
Go in for the test "clean".
It's something they have to specifically test for, but the military doesn't (yet) test for it.
Yes
The Military doesn't fool around. If they are testing, it will be effective.
If you are that worried the don't smoke it. Or get out of my military, idiot.
Not routinely but they can.
no
Nope.
Most definitely. They can throw you out or even court-martial you for failing a drug test.