do you need to asperate you needle for a slin pin/hgh injection.
The GH solution is water based - so no, you do not need to asperate. In fact, if you inject into a vein you'll love it.
Some guys actually inject GH intraveinously. If you're trying to specifically inject into the muscle trained is the only time I would worry about aspirating with GH to make sure you're in the muscle trained and not a vein.
BEAST