BG meter accuracy - the basis for good decisions

We make glucose treatment decisions every day based on our fingerstick meters. But how do we know we should trust our meters?

I use a Roche Accu-Chek Aviva Connect blood glucose or BG meter. My Dexcom CGM is calibrated using this meter and the CGM feeds BG data every five minutes to Loop, my automated insulin dosing system. The reasonable accuracy and precision of my meter is central to my management system.

That’s why I have my doctor order a lab plasma glucose blood test every three months. Immediately after my blood is drawn, I do three fingersticks and record the numbers on my phone. I made sure my hands are freshly washed and thoroughly dried. I took blood separately from three fingers, two on one hand and one on the other.

This morning’s fingerstick numbers were 92, 88, and 88 mg/dL (5.1, 4.9, 4.9) or an average of 89.3 (5.0). The lab result came back at 89 mg/dL (5.1). I am now reasonably assured that my treatment decisions as well as those decisions that Loop makes are accurate and precise enough.

It’s worked out well for me and I thought others might benefit in replicating this system.


Or one could use a Contour Next meter, which are known quantities of accuracy. :slight_smile:

I’ve used many meters over 50 years. The Contour Next is the most accurate by far, for me.

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@rcarli I didn’t get a meter until around 92. dumb me used visually-read strips for too many years, with me making too many mistakes in evaluating the colors of chemstripbg. I started using that system around 79 or 80 (i was dx’d in 78)

When I get blood drawn for A1C’s my Dr. always orders a glucose test automatically so I test my BG at the same time and it always comes back within a few points.

I think that is a good check on the system. Test strip manufacturing quality is another wildcard that a lab comparison will check. I think this is a prudent practice.

What meter do you use?

Currently Contour next but I’ve used OneDrop Chrome and had the same results.

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