Control your meter

Based on Amy Tenderich’s review and Bernard Farrells’s video I ordered the AgaMatrix WaveSense KeyNote BGM. There isn’t much to tell you about this meter that you can’t get from the review or the video. However, I did notice that the readings on the Keynote were higher than on the FreeStyle Flash. A lot higher. So I used the Keynote Control Solution to calibrate the meter and tested again. The results were the same I now think that my FreeStyle Flash needs to be calibrated. The FreeStyle Flash readings may have been off for a while. Even though my BG was well managed my A1C results keep coming back at about 7. Now I have learned a lesson in the importance of making sure the meter is correctly calibrated.

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3 Responses

  1. I agree with Lili. The solution only tells you whether things are working right. And given the range on the solution, I personally don’t find them very informative.

    I can’t remember when I last used a control solution.

    I was comparing the KeyNote with the OneTouch Ultra I have to use because of the Dexcom.

    What I found is that the KeyNote mostly gives a higher reading than both the OneTouch and the Dexcom. To me that doesn’t mean that any of them are correct, without a lab verification it would be hard to tell.

    Don’t forget that all meters have an accuracy range of something like + or – 15% (AgaMatrix claims the KeyNote is closer). So if one meter says 100 and another meter reads 130, in theory they might both be ‘correct’ if the actual answer was 115 mg/dL!

  2. I guess I don’t understand…the meter can only be calibrated by the manufacturer. The control solution just tells you if the meter is malfunctioning (if you get a result outside of the control range on the bottle).