If you just need to get meth out then yes! Easy as pie considering meth is only in your urine for a couple of days after use. I have used it to get thc out which was a pain in my butt, but whatever i passed so you should be good too.
You loose a lot of weight while using crystal...After I used it for 2 weeks i had already lost 25 pounds. but no one should use meth, it is terrible, you don't just loose weight, you loose your looks, family, friends and everything! it ruins you life trust me.
You answered the question for yourself: 1 gram. What one gram looks like can be anything from a bud the size of a quarter to much larger depending on how dense the bud is, which is controlled by the lumen and spectrum output of the lights used during growing.
HIV is a virus and, therefore, is neither Gram positive nor Gram negative. The Gram stain is used to identify bacteria as either Gram negative or positive, depending upon the type of cell wall the bacteria has. The Gram stain cannot be used on viruses.
If the crack pipe was used to smoke Meth, then yes. Otherwise, Cocaine and meth are completely different drugs. Meth would show up as an amphetamine, and cocaine shows up in a separate test just for it.