In movies and TV you see heroin users insert a needle, pull blood out, and then inject. 1. Is that how people really do it, and 2 why do they mix blood first?

Question

In movies and TV you see heroin users insert a needle, pull blood out, and then inject. 1. Is that how people really do it, and 2 why do they mix blood first?

In: Biology

Answer 1

It’s just to make sure they’re in a vein and aren’t about to shove a syringe of heroin into their muscle/skin/tendons/etc and then get sepsis