Monitoring Glucose Accuracy

A Critical Tool for Accurate Blood Glucose Monitoring. Monitoring your glucose levels is a critical part of managing diabetes. However, it’s important to ensure that your monitoring is accurate to ensure that you’re making the right decisions about your health. In this blog post, we’ll discuss why glucose accuracy is important, how to monitor it, and answer some common questions about glucose monitoring accuracy.

Why Glucose Accuracy Matters:

  • Accurate glucose monitoring is critical to managing diabetes and preventing long-term complications.
  • Inaccurate readings can lead to incorrect treatment decisions, such as administering too much or too little insulin.
  • Regularly monitoring glucose accuracy can help identify potential issues before they become serious problems.

How often should I check my glucose meter’s accuracy? 

The American Diabetes Association recommends checking glucose meter accuracy at least twice a year, or whenever you suspect that your meter is giving inaccurate readings.

How to Monitor Glucose Accuracy

  • Check your glucose meter’s accuracy by comparing it to a laboratory blood glucose test. You can do this by having both tests done at the same time and comparing the results.
  • Ensure that your glucose meter is properly calibrated and maintained according to the manufacturer’s instructions.
  • Use a control solution provided by the manufacturer to check that the meter is working correctly.
  • Test your glucose meter’s accuracy with a new batch of test strips or after cleaning the meter.

Can I trust the accuracy of continuous glucose monitoring systems (CGMs)? 

CGMs are generally very accurate, but they can still produce false readings. It’s important to calibrate your CGM according to the manufacturer’s instructions and use a fingerstick blood glucose test to confirm any unusual readings.

Devices for Monitoring Glucose Accuracy:

  • Blood glucose meters, such as OneTouch, Accu-Chek, and FreeStyle.
  • Continuous glucose monitoring (CGM) systems, such as Dexcom, Medtronic, and Abbott.
  • Laboratory blood glucose tests, such as those performed by Quest Diagnostics or LabCorp.
  • Control solutions, such as True Control, Precision Xtra, and Contour Next.
  • Smartphone apps, such as MySugr, Glucose Buddy, and Sugar Sense.


Monitoring glucose accuracy is essential for managing diabetes effectively. By following these steps and consulting with your healthcare provider, you can ensure that your glucose monitoring is accurate and reliable. Regularly monitoring glucose accuracy can help you prevent complications and make informed decisions about your health.

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