Are you refering to leakage of the juice or just blood?!? Blood is obviously normal. As a matter of fact, I did my shot today, and a very dark drop of blood came out (in my quad). Put a swab on it and massaged a bit, and it stopped bleeding, wasn't much. Sometimes when you inject, the needle mayb go through a vein, and therefor cause it to leak a bit.

In terms of the juice leaking, it happens sometimes. I've had it occur a couple times, it's not much though, just a drop or two comes out. Try injecting a bit slower. Some people try stretching the skin, only problem is it's hard, cuz then you can't use both hands to inject (quads), and if you let go accidently, I hear it's VERY painful.