I recently obtained a new meter, and the readings are 20 points lower than my other meter. The new one I got is an Accu Check Plus and the old one is a True Trak. I would think that the Accu CHeck Plus would be more accurate. When I did the test with the sample, it was within the range it was suppose to be, therefore, I presume it would be accurate. My True Trak has a chip you put in your meter to see if it is working properly, and according to that , it is! When I go see my doctor next month, I will compare to his office meter, but until then, does anyone know how I can make sure my new meter is right? I like the lower numbers, but am I just kidding myself?