1. Test it for mass, purity, endotoxins, whether it is the real deal or not; this can be easily mitigated if one joins some testing group to share costs.
2. Calculate the dosage units properly, as it depends on how much bacteriostatic water is mixed with the powder. Here, many peptide calculators help. Some will end up making mistakes here; instead of taking 5 units, one will take 50 units--this leads to ER visits.
Most people's understanding of basic math, and ability to precisely follow directions, is terrible. What's to prevent you from ending up with a concentration that's 10x or 100x what you intended?
I heard a story once about a research chemist who decided to synthesise LSD for his own use, miscalculated and gave himself a massive overdose-it didn’t kill him, but it rendered him non compos mentis for an extended period. Even ___domain experts can make dumb mistakes, especially when you separate them from formalised quality control systems aimed at catching those mistakes before anyone is harmed.
Risks, there are risks everywhere. Late Philosopher of Science, Larry Laudan wrote a little book--The Book of Risks: Fascinating Facts About the Chances We Take Every Day
