Is your meter telling the truth

I have moved this topic from my thread to a new topic as I think it needs some discussion, if not done already.

OK I have been to Boots and bought a new packet of 50 Contour strips, and done same test with both meters from same finger, and still getting different readings on each meter. only now the Contour is showing the lower reading at 4.1 and the Accu-check is showing 5.9 what is going on here do the meters always differ in readings and how do I know which is showing he right reading ????
I have also done a control test with bayer test solution. Cont normal range on box shows 5.6-7.9 test shows 6.1 so it is within range.

Now after some research I would have to concede they both are right, as from what I am reading tells me that at best the maters are only 20% accurate as a Type 2 not end of world stuff, but if your a type 1 or in pregnancy, where does that leave you, how can you trust the meter??

The standards used in the U.S. (and elsewhere) today for blood glucose tests were actually established in 2003 by the Switzerland-based multinational organization known as The International Organization for Standardization (ISO), and those standards permit manufacturers +/- 20% deviation from actual clinical laboratory tests for blood glucose levels. (The formal document number is ISO 15197:2003 entitled "In vitro diagnostic test systems - requirements for blood-glucose monitoring systems for self-testing in diabetes mellitus", but be advised that the organization will charge you a hefty 130 Swiss Francs to download a copy of the lengthy document,

So figures above show 4.1 on my Contour that would equate to +/- 20%@4.1= +4.92 -3.28 and I think you can see they are way off the mark at 37% too the accu-check meter, and they are new meters? So where does the 5% accuracy come into it, I thought you used these meters to determine the amount of Insulin you inject, if that's the case how can that be right? You will be giving yourself too much or not enough. and too much, then getting in a car to drive could be dangerous. Or am I way off the mark here.

Debate is the key to knowledge, understanding and improvement Jopar, what tells you your meter is -/+ 10% is that printed on it, the point I am showing is it is not even 20% so the figures above show, We all work hard to keep our blood sugars on track, and for our efforts to be thwarted be so, so meter readings is not on. To say they are better than they where before is not acceptable!! So is my car, but I would not accept the wrong petrol consumption figures being given to me.
Please read item, http://sixuntilme.com/blog2/2010/03/acc ... eters.html

RoyG said:

Debate is the key to knowledge, understanding and improvement Jopar, what tells you your meter is -/+ 10% is that printed on it, the point I am showing is it is not even 20% so the figures above show, We all work hard to keep our blood sugars on track, and for our efforts to be thwarted be so, so meter readings is not on. To say they are better than they where before is not acceptable!! So is my car, but I would not accept the wrong petrol consumption figures being given to me.
Please read item, http://sixuntilme.com/blog2/2010/03/acc ... eters.html

Click to expand...

So in a nut shell accuracy has not improved in over 20 yrs, yet the company's charge over £20 a pop for 50 strips and Diabetes is on the increase no wonder they have not found 1/ a more accurate meter and 2/ A cure, why kill the Golden goose????