yes
no
No, heroin and crack are two different class of drugs and will show up different on drug tests.
about 20%
Coke, as in cola products cannot be smoked. Coke, as in cocaine, is smoked, illegally, in the form of crack.
crack is from coke and heroin is from opium or poppy seeds
Did you go to the dentist? I had Novacaine show up as coke but I'm not sure about the meth.
Coke, crack, meth.
Its not a smart idea. Although crack isn't water soluble, its vinegar soluble. But injecting vinegar is highly dangerous. Cocaine (coke), which is powder form of crack is water soluble and is a lot safer than shooting up crack.
Crack ( not coke but crack) and meth aka ice
If you smoked crack and it didn't do anything you probably didn't smoke crack however on the of chance that you are immune to the effects of crack there is no reason to assume that it would not show up in a drug test.
I remember when crack was a hole in the sidewalk. That was back when coke was a soft drink.