If you are body fat is over 15%, you shouldn't be injecting anything. You are too fat to cycle. If you are under 15% then you are lean enough that there shouldn't be an issue. Also make sure you re using a long enough needle and pushing in far enough. A 5/8" needle is probably alright for something like delts, but for glutes or quads you should probably go for at least a 1"
even if you do inject into fat most of the gear will be assimilated altho due to less blood flow in fat ,this will take a while, alot different than into muscle, i agree you should be lean enough to not have much fat in muscle tissue.