Accuracy and Reliability of Glucose Level Monitors: Exploring the Evidence

3 Min Read

Glucose level monitoring is a crucial aspect of diabetes management, allowing individuals with diabetes to monitor their blood sugar levels and make adjustments to their insulin doses, diet, and physical activity accordingly. In recent years, Continuous Glucose Monitoring Systems (CGMS) have become increasingly popular as they provide real-time glucose data, allowing for more accurate diabetes management. In this blog post, we’ll explore the accuracy and reliability of glucose level monitors and the evidence supporting their use.

Several different types of glucose level monitors are available on the market, including the FreeStyle Libre CGMS, Dexcom CGMS, and traditional blood glucose meters. Accuracy and reliability are crucial factors to consider when choosing a glucose level monitor. The FreeStyle Libre CGMS has been extensively studied, with multiple studies evaluating its accuracy and reliability. One study compared the accuracy of the FreeStyle Libre CGMS to a laboratory reference method and found that the device had a mean absolute difference of 9.7 mg/dL (0.5 mmol/L), indicating high accuracy. Another study evaluated the reliability of the FreeStyle Libre CGMS over two weeks of continuous wear and found that the device provided consistent and reliable glucose data, with a mean absolute difference of 8.2 mg/dL (0.5 mmol/L) between the CGMS and reference values.

Traditional blood glucose meters are also widely used and are generally considered to be accurate and reliable. However, they do not provide real-time glucose data, and individuals must manually test their blood glucose levels several times a day.

When considering the cost of glucose level monitors, the FreeStyle Libre CGMS can be more expensive than traditional blood glucose meters, but they provide additional benefits in terms of real-time glucose data and the ability to adjust insulin doses and other factors in real-time. It is essential to note that the cost of these devices can vary significantly depending on insurance coverage and other factors.

In conclusion, glucose level monitoring is a crucial aspect of diabetes management, and choosing an accurate and reliable glucose level monitor is essential for achieving optimal glucose control. The evidence supports the use of FreeStyle Libre CGMS as a reliable and accurate glucose level monitor, while traditional blood glucose meters remain a cost-effective option. Ultimately, the choice of glucose level monitor should be based on individual needs, preferences, and budget.

At MedGuardMedical we provide only top quality CGM monitors which have been developed with advanced technologies that make using them simpler than ever before! With our products you get an accurate reading of your glucose levels at all times so you can stay on top of your diabetes management plan without any hassle! For more quick reads and health tips, explore our website and facebook page.


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