I'm stacking supertest 450 and deca 300 right now...i mix both in the same syringe because the supertest is so thick and the deca helps make the injections a little less painfull...my question is everytime i draw the supertest i get these little tiny bubbles in the syringe...i flick it a few times then run it under warm water for a minute and it seems to get rid of most of them...then after i insert the syringe into my glute i pull back on the plunger to make sure i'm not injecting into my blood stream...from what i understand if you pull back and see an airbubble thats good..and obviously blood would be bad...when i get the airbubble it just kind of floats to the top and i still inject...is this ok? heard injecting any kind of air into your body is bad...can lead to infection and i've even heard of people loosing limbs over it.