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CGM COMPARISONS

CHOOSING A CGM MODEL

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Selecting the right Continuous Glucose Monitor can feel overwhelming with so many options on the market. We’re here to help. Below is a comparison of the most trusted CGM systems, outlining key benefits to guide your decision-making.

After reviewing your options, speak with one of our team members or your healthcare provider to determine which model best suits your lifestyle and medical needs.

FREESTYLE LIBRE 3 & LIBRE 3 PLUS SENSORS

The FreeStyle Libre 3 is a next-generation Continuous Glucose Monitoring (CGM) system, FDA-approved in 2022 for adults and children ages 4 and older. With unmatched accuracy and a compact all-in-one sensor, it delivers glucose readings in real time and customizable alerts directly to your smartphone.

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✅ Benefits

  • No fingerstick calibrations required

  • Covered by Medicare and most major insurance plans

  • Real-time glucose alarms (customizable)

  • Market-leading CGM accuracy

  • All-in-one sensor/transmitter replaced every 15 days

  • Automatic readings every minute (within 33 feet)

  • 1-hour warm-up time

  • Approved for children as young as 4

  • Compatible with a reader (optional)

  • Insulin pump integration coming soon

⚠️ Considerations

  • Reader (if used) must be charged weekly

  • Sensors are single-use and non-reusable

  • High doses of vitamin C may affect accuracy

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FREESTYLE LIBRE 2 & LIBRE 2 PLUS SENSORS

The FreeStyle Libre 2, released in 2020, is a widely trusted integrated continuous glucose monitoring (iCGM) system. Designed for both adults and children ages 4 and older, it offers reliable real-time glucose monitoring with high accuracy and customizable alerts to help manage diabetes confidently.​

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✅ Key Benefits

  • No calibrations required — no fingersticks

  • Covered by Medicare and most major insurances

  • Optional real-time alarms for highs and lows

  • All-in-one sensor/transmitter replaced every 14 days

  • Fast 1-hour warm-up time

  • Approved for patients as young as 4

  • Compatible with the FreeStyle reader

  • Integrates with multiple insulin delivery systems

⚠️ Things to Consider

  • Reader (if used) needs charging once per week

  • Sensors are single-use and cannot be reused

  • High levels of vitamin C may affect sensor accuracy

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FREESTYLE LIBRE 14 DAY

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The FreeStyle Libre 14 Day is a revolutionary CGM system first FDA-approved in 2017. It was the first CGM to eliminate the need for fingerstick calibrations or physician-applied sensors. Designed for simplicity, comfort, and accuracy, the Libre 14 Day allows users to track glucose trends with a quick scan, and its sensor lasts up to two full weeks.

The reader device can store up to 90 days of glucose data, while the sensor itself holds 8 hours of real-time data, giving you clear insight into your glucose patterns and progress.

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✅ Key Benefits

  • No fingerstick calibrations required

  • All-in-one sensor/transmitter replaced every 14 days

  • Covered by Medicare and major insurers

  • Compatible with reader or smartphone

  • 1-hour warm-up time

  • Stores 8 hours of glucose data

  • Ability to share data with caregivers

⚠️ Things to Consider

  • Reader must be charged once weekly

  • No built-in alarms or alerts

  • Sensors are single-use and cannot be reused

DEXCOM G6

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The Dexcom G6 is FDA-approved for individuals ages 2 and older. This advanced CGM system provides real-time glucose monitoring without the need for fingerstick calibration. Designed for convenience, the G6 uses continuous tracking technology to deliver readings automatically, alerting users when glucose levels become too high or too low.

The Dexcom G6 sensor lasts for 10 days, and the transmitter is replaced every 90 days. Glucose data is sent directly to a receiver or smartphone app, enabling users and caregivers to stay informed with up-to-the-minute alerts and trends.

✅ Key Benefits

  • Continuous glucose monitoring and real-time alerts

  • No fingerstick calibrations required

  • Sends data to a receiver or smartphone app

  • Customizable alerts based on personal glucose targets

  • Not affected by acetaminophen, unlike many other CGMs

  • Covered by Medicare and most insurance plans

  • Approved for patients ages 2 and older

  • Allows data sharing with caregivers

  • Transmitter lasts 90 days

⚠️ Considerations

  • Sensors must be replaced every 10 days

  • Transmitter must be replaced every 3 months

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DEXCOM G7

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The Dexcom G7 is FDA-approved for individuals aged 2 and older, offering a seamless all-in-one sensor and transmitter patch. It eliminates the need for fingerstick calibration and provides real-time, continuous glucose monitoring. Alarms notify users when blood sugar levels move outside of target ranges, helping you stay informed and safe.

The G7 offers improved convenience over the G6, with a 30-minute warm-up period and a simplified design that combines the sensor and transmitter into a single piece.

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✅ Key Benefits

  • Real-time continuous glucose monitoring

  • 30-minute warm-up time

  • Sends data directly to your smartphone or receiver

  • Alerts for high and low glucose levels

  • Readings not impacted by acetaminophen

  • Covered by Medicare

  • Approved for individuals ages 2 and up

  • Easy data sharing with caregivers

  • No calibration required

  • All-in-one patch design

⚠️ Considerations

  • Sensors must be replaced every 10 days
    (15-day sensors expected soon)

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These products may be covered by your insurance.


Click “Qualify Now” to get started with a free sign-up or Call us directly at (201) 300-0101 for assistance.

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