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
So if you are doing that to make sure you are in a vein…
Do people trying to hide their usage, not go into webbing of their toes? Or are their large enough veins there to get it into the circulatory system?
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