well i get my stuff thru my clinic. but i think that clinics in general dont have your best interest in mind. they want your money which is why im prescribed 400mg/week but i only use 140/week. i rely on myself to get bw done and have the clinics dr review it along with other people that i trust. i also have a pretty good idea what im looking at. so a mix of both i guess. best advice i can give. dont trust the clinic to be looking out for you and educate yourself on interpreting blood work