I relies this post is quite long. I put in extra information so responders who feel they need to 'help' would just pass by. Please let me know if you have a constructive comment.
A couple of weeks ago, I had a severe blood sugar crash. In fact, my level was so low it would not register on my meter. According to the meters FAQs that would be below 20. I finally checked my level on both brands of meters I own. The Bayer Contour continued to report LO. The meter I've used for years, a One Touch reported 103. Due to my foggy mentation I decided to treat with a result half way between the two.
Once I recovered, I decided it was time to find out which one was more accurate. I tested my two One Touch meters and the Bayer Contour with the approved solutions. All three were within the posted range. Once again I checked my level from the same site, at the same time. The Contour was 63 points lower than the One Touch. I could either be heading for a major crash again or have a perfectly normal level.
I contacted my doctor's office and we decided to have a random level drawn at the local hospital and do a meter check at the same time. When i arrived at the lab, i did a finger stick and tested all three meters. After the lab drew the sample they would use, i once again did a finger stick and tested on the three meters. Little time passed between each of these.
The results of the test showed that both of my One Touch meters were within 10 points of the lab's results. On the other hand the contour was 92 points lower.
A call to the Bayer support began with the standard lecture regarding the difference between meters and I should expect a different result from them. After getting across to the support person the huge gap, the next spiel was about testing technique and accuracy of lab draws, and then I had to jump through hoops to "check the electronics" and then using the testing solution.
Twenty some minutes later it was decided that the meter needed to be replaced. At this time I was put ON HOLD, so the support person could "make arrangements". About eight minutes of that cured me of phone usage and I disconnected figuring I'd never hear from them. It was nice to be wrong.
A week later a new meter arrived from Bayer. I unpacked it, used the testing solution and then set up to do a finger stick. Once again I used the One Touch as a back up. Testing both meters from the same sample gave widely different results, again. This time the contour was 104 points lower. So, was my blood sugar low (Contour) or was it high (One Touch)? Do I eat or do I dose? How do I chose? Are others having the same issues? Are others just blindly accepting the results?