A friend told me that a buddy of his injected it into his quad, and it turned black and stayed like that for a while!.. Don’t know what happened or how to explain it, but now i am paranoid about doing a quad injection.
Does anyone know how that could happen to a leg? Maybe hit a nerve or blood vessel?[/quote]
Is he injecting with a big needle and in the wrong spot?
It just sounds like a bad bruise, which would mean he damaged a bigger vessel (which would occur if you inject into the upper 1/3 of the quad and right in the middle of it).
Your best bet is to inject in the middle 1/3 and off to the outer side. Quad injections are the easiest ones to do solo, so get used to it.