hi i have my bf tested at my gym with eletronic machine and have been reading posts here that say its not very accurate what is a better way to test bf and where can i have this done? in 3months or so will be starting a 12 week cycle of test e 250mg 2x a week what gage size needle should i use? where is best place on my body to inject? should i inject in the same place evry time? please help if u can thankyou