Today was the first time that i had gotten blood in a syringe while aspirating. I have always wondered what would happen if I were to pull out and inject the blood/gear into the muscle? I pulled out and squirted the blood out and changed needles. The oil seemed to float on the blood so it wasn't a problem. Makes sense that the gear is still good but i was wondering about injecting the blood. Would it just cause a deep bruise or not even be noticeable?