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Published Sep 4, 2020

#375 Dexcom Calibration Practices

Explore the evolving landscape of diabetes technology as Scott Benner and Jenny delve into the intricacies of Dexcom G6 calibration practices, focusing on maintaining accuracy, reliable readings, and the personalized nature of managing type 1 diabetes.
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  • Calibration Need

    The necessity of calibrating the Dexcom G6 is a topic of debate among users. shares that while his daughter's CGM often reads accurately, there are times when it shows a significant discrepancy, prompting him to calibrate by coaxing the readings closer to reality 1. notes that calibration needs can vary with each sensor, and sometimes the device may request calibration unexpectedly 2. She emphasizes the importance of using a reliable blood glucose meter to ensure accurate calibration 3.

    You can't calibrate it because it just does not compute and you fry its mind and it takes forever for it to come back from that.

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    For some, calibration is a rare necessity, while others find it crucial for accuracy.

       

    Calibration Methods

    Personal techniques for calibrating the Dexcom G6 vary widely. Scott describes a method where he calibrates by inputting a number closer to the CGM's reading to gently adjust it, a technique he finds effective 1. mentions that some users prefer to let the sensor "marinate" overnight before calibration, which can stabilize initial readings 4. also discusses a double calibration technique, where entering the same calibration number twice can force the device to align with the user's readings 5.

    A double calibration on close numbers forces it to agree. Now, the question in my head always is, does it stick?

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    These varied approaches highlight the personalized nature of CGM calibration.

       

    Calibration Issues

    Calibration challenges with the Dexcom G6 often stem from sensor inaccuracies and user practices. points out that using outdated blood glucose meters can lead to calibration errors, as the CGM might be more accurate than the meter 6. shares anecdotes of users who believe their transmitters need time to "learn" their bodies, though this is a misconception 7. He stresses the importance of understanding personal trends and avoiding calibration during periods of rapid glucose change 8.

    The transmitter has nothing to do with the measurement of your blood sugar, it's just sending the signal.

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    These insights underscore the need for informed calibration practices to ensure sensor accuracy.

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