I have been injecting tren in multiple sites and had no problem with most but when i inject in my biceps with a 25 5/8. If i miss the site and it does not go all the way into the muscle,( not saying I miss but if it leaks out) does it then make your arm hurt and turn the skin red? It feels like a bruise.
Don't inject in the biceps. Lat, quad, glute, ventro-glute, trieps and delt are all better that the biceps as raf as injection sites go. I would never inject AAS in the biceps.
Thanks Rainjack for that info.