Bought this to monitor myself once a week, only used it a few times, read instructions carefully and do slowly. Should know more at the next official check in Sept....now June.. if its accurate, blood sugar seems ok(close to doctors HbA1c test)and if the cholesterol number it is giving me is right then all is good with that area. Delivery was excellent and easy to order, how reliable it is who knows, we buy on the assumption it is accurate or somewhere near, first signs are that it probably is somewhere near, i bought to graph my intake and lifestyle as I have had to change my diet. NB i have been an active sportsman all my life and don't drink very often or smoke, so this can happen to anyone,