I pinned my quad with test cyp from the pharmacy from my prescription. So I'm pretty sure it wasn't contaminated or brewed poorly.
It felt like I had knife in my quad for the next few days. I had to walk with a limp and couldn't straighten that leg for days. I try it again every few years and even with 0.2ml my leg hurts. I've tried it in different spots and even a couple different muscles in the thigh. Hurts every time.
But I can inject Primo 200, DHB, test prop, Tren A and E, in my lats, delts, glutes ventral glutes, all with no pip at all. But the tiniest bit of anything in my quads and I'm hurting.
Sucks too because it would be a really convenient place to pin.