Out of curiosity, anyone know where the line is drawn on what is possession for personal use and what is possession with intent to distribute? Is it 3 vials? is it 10? 50?
It depends which law enforcement agency you're dealing with and the specific compound. In the US, everyone is subject to both state and federal law, and they don't always match.
A common scheme for the various states is to have catch-all laws that apply based on the scheduling of the drug, and then to have specific carve-outs for drugs they want to target in particular. If meth is destroying your community, you can make a meth-specific law. Or, if you realize LSD is sold in microgram quantities while marijuana is sold by the gram or even ounce, you might pass a law that establishes a different weight scheme for LSD than for other compounds in its scheduling category (both federal schedule I). You can see how
Texas,
Virginia, and
California do it... similar, but distinct. There is also a parallel
federal law. If you engage in an action that is illegal under both federal and state law, and somehow make it on the radar of two law enforcement agencies (say the DEA and your state police), you can be prosecuted by both sovereigns (the state and federal govts).
Anabolic agents are typically schedule III controlled substances. The mass required to trigger possession with intent to distribute (again) varies by state. Some states actually do care whether you intended to distribute -- in California, you have to have provable intent, but in Texas, intent is inferred from mass. Here's what can be shitty: laws are written a little sloppily, so in some cases, people are prosecuted not based on the amount of actual compound, but the mass of the whole package. What I mean is, if you have a vial to test cyp that is 250 mg/mL, and you have 10 mL, a reasonable person would say that you have 2.5 grams. But some agencies will take the mass of the oil into account. When places were just massacring people based on marijuana possession, they were sometimes weighing the soil that a plant was growing in.
OFC, that's just the US. If you live in Singapore, I think they just cut your dick off and suffocate you with it on the spot. Harsh but fair.