Understanding Continuous Glucose Monitors (CGMs): Benefits and Top Models in 2025

Managing diabetes has evolved dramatically in recent years, and one of the most transformative tools is the Continuous Glucose Monitor (CGM). These wearable devices provide real-time insights into blood glucose levels, helping individuals with diabetes make informed decisions about diet, exercise, and medication. Whether you're managing Type 1 or Type 2 diabetes, CGMs offer a powerful way to improve glycemic control and reduce the risk of complications.

Benefits of Using a CGM

Unlike traditional fingerstick tests, CGMs measure glucose levels in the interstitial fluid every few minutes—up to 288 times per day. This continuous data stream allows users to:

• Track trends and patterns in glucose levels throughout the day and night.
• Receive alerts for high or low blood sugar, helping prevent dangerous episodes.
• Reduce the need for fingersticks, improving comfort and convenience.
• Improve A1C levels and increase time spent in the target glucose range.
• Make proactive lifestyle adjustments, such as modifying meals or activity based on glucose responses.

CGMs are especially beneficial for insulin users, but newer models are also available for non-insulin-dependent individuals interested in metabolic health.

Top CGM Models in 2025

Here’s a comparison of the leading CGMs available for sale at Diabetesstore.com:

1. Dexcom G7

• Wear Time: 15 days
• Accuracy: Industry-leading (MARD ~8.2%)
• Features: Real-time readings every 5 minutes, customizable alerts, integration with smartphones and smartwatches, and compatibility with insulin pumps.
• Best For: Tech-savvy users needing tight glucose control.

2. Abbott FreeStyle Libre 3

• Wear Time: 14–15 days
• Features: Compact sensor, automatic updates every minute to your smartphone, no fingerstick calibration.
• Best For: Budget-conscious users seeking reliable performance and ease of use.

3. Medtronic Guardian 4

• Wear Time: 7 days
• Features: Predictive alerts, integration with Medtronic insulin pumps, requires calibration.
• Best For: Users already using Medtronic insulin delivery systems.

5. Dexcom Stelo (OTC)

• Wear Time: 15 days
• Features: Over-the-counter availability, no prescription needed, app-based tracking, no alerts for hypo/hyperglycemia.
• Best For: Non-insulin users interested in general wellness and glucose awareness.

Choosing the Right CGM

When selecting a CGM, consider factors such as wear time, accuracy, alert features, app compatibility, and insurance coverage. Speak with your healthcare provider to determine which device best suits your medical needs and lifestyle.

At Diabetesstore.com, we offer a curated selection of CGMs to help you take control of your diabetes with confidence. Explore our catalog today and find the right monitor to support your journey toward better health.

Continuous Glucose Monitor (CGM) Comparison

Explore the features of top CGM models available at Diabetesstore.com. This table highlights key specifications to help you choose the right device for your needs.

Figure: Comparison of CGM Wear Time Across Models