The Best Continuous Glucose Monitoring Systems for Type 1 Diabetes in 2025

For individuals living with Type 1 diabetes, managing blood glucose levels is a constant, critical task. Thanks to technological advancements, Continuous Glucose Monitoring (CGM) systems have revolutionized diabetes care by offering real-time glucose readings without frequent fingersticks.

But with several devices on the market, how do you choose the best CGM for Type 1 diabetes? In this guide, we break down the top CGM systems available in 2025, their features, pros and cons, and why they might be the right fit for you

What is a Continuous Glucose Monitoring System?

A continuous glucose monitoring system tracks glucose levels in real-time through a small sensor inserted under the skin. It transmits glucose readings every few minutes to a receiver, smartphone, or insulin pump, allowing users to monitor trends, receive alerts, and make data-driven decisions for better glucose control.

For people with Type 1 diabetes, CGMs can help reduce hypoglycemia risk, improve HbA1c levels, and provide greater flexibility and peace of mind.

Top Continuous Glucose Monitoring Systems for Type 1 Diabetes

1️⃣ Dexcom G7: The Most Accurate CGM for Type 1 Diabetes

✅ FDA-approved and widely recommended
✅ 10-day sensor wear time
✅ No calibration required
✅ Compatible with smartphones and insulin pumps

The Dexcom G7 is considered by many healthcare professionals as the best continuous glucose monitoring system for Type 1 diabetes in 2025. It provides industry-leading accuracy, customizable alerts for high and low glucose, and seamless integration with insulin pumps like Tandem’s t:slim X2.

🔍 Why we love it: The smaller sensor and shorter warm-up time (30 minutes) make it more comfortable and convenient than previous Dexcom models.

Ideal for: Active individuals, insulin pump users, and those needing tight glucose control.

2️⃣ Freestyle Libre 3: Best CGM for Affordability and Simplicity

✅ 14-day sensor wear
✅ Compact, low-profile design
✅ Optional alarms for highs and lows
✅ No fingerstick calibration

The Freestyle Libre 3 is a fantastic option for those seeking a more affordable continuous glucose monitoring system for Type 1 diabetes without sacrificing core features. It automatically updates glucose readings every minute to your smartphone app and offers a simple, user-friendly interface.

🔍 Why we love it: Its lower cost makes it accessible for many users, while offering impressive accuracy and long sensor wear.

Ideal for: Cost-conscious users, beginners, or those preferring minimal device maintenance.

3️⃣ Medtronic Guardian 4: Best CGM for Integration with Insulin Pumps

✅ Works with Medtronic MiniMed 780G system
✅ Predictive alerts up to 60 minutes before lows/highs
✅ Auto mode adjusts insulin delivery automatically

If you’re using a Medtronic insulin pump, the Guardian 4 CGM provides seamless integration. This continuous glucose monitoring system for Type 1 diabetes works in tandem with the MiniMed 780G to automate insulin delivery, reducing the burden of manual adjustments.

🔍 Why we love it: The predictive alerts and automated insulin adjustments make it ideal for users seeking hybrid closed-loop systems.

Ideal for: Medtronic pump users or those interested in automated insulin delivery.

Key Features to Consider When Choosing a CGM for Type 1 Diabetes

When evaluating the best continuous glucose monitoring system for Type 1 diabetes, consider:

✔️ Accuracy – How reliable are the glucose readings?
✔️ Sensor lifespan – How often will you need to change sensors?
✔️ Integration – Does it connect with your insulin pump or other devices?
✔️ Alerts – Does it notify you of highs and lows in time to act?
✔️ Cost and insurance coverage – How much will it cost out-of-pocket?

Benefits of Using a Continuous Glucose Monitoring System for Type 1 Diabetes

✅ Better glucose control with fewer highs and lows
✅ Less reliance on fingerstick testing
✅ Improved HbA1c and time-in-range
✅ Real-time alerts to prevent hypoglycemia
✅ Data trends for better decision-making

Many endocrinologists recommend CGMs as part of modern Type 1 diabetes management, making them an essential tool for long-term health and quality of life.

Where to Buy Continuous Glucose Monitoring Systems for Type 1 Diabetes

At Relief Medical Supply, we provide access to the best continuous glucose monitoring systems for Type 1 diabetes in Rochester, NY, and beyond. Our team can help you navigate insurance coverage, prescriptions, and product selection to ensure you get the right CGM for your needs.