Dexcom G6 vs Freestyle Libre 3: Unveiling the Ideal CGM Device

dexcom g6 vs freestyle libre 3. in this image there are 2 products dexcom g6 and freestyle libre 3 which are both made for glucose monitoring device and we a re comparing these devices with each other so which one is better
Table of Contents:
  • What is CGM?
  • Dexcom G6: Revolutionizing CGM Technology
  • Freestyle Libre 3: Unleashing the Smart CGM Revolution
  • Dexcom G6 vs Freestyle Libre 3; COMPARISON
  • Which CGM Device is Right For You?
  • Buy CGM devices from us!
  • Conclusion

Dexcom G6 vs Freestyle Libre 3: Unveiling the Ideal CGM Device

What is CGM?

We’ll make a thorough comparison of the Dexcom G6 vs Freestyle Libre 3. It is called CGM, or continuous glucose monitoring.People with diabetes use this approach to constantly check their blood sugar (glucose) levels both during the day and at night.

Brief overview of CGM systems

Continuous Glucose Monitoring (CGM) systems are advanced medical devices designed to measure and monitor glucose levels in individuals with diabetes. Unlike traditional fingerstick blood glucose monitoring, CGM systems provide real-time or near-real-time data on glucose levels throughout the day and night, offering valuable insights into glucose patterns, trends, and fluctuations.

CGM systems consist of three main components:

  1. Sensor: A small, disposable sensor inserted under the skin to measure interstitial fluid glucose levels. The sensor continuously measures glucose levels and sends the data to a transmitter.
  2. Transmitter: The transmitter wirelessly receives the glucose data from the sensor and sends it to a receiver or compatible mobile device.
  3. Receiver/Mobile Device: The receiver or mobile device displays the glucose readings, trend data, and various alerts, allowing users to monitor their glucose levels and make informed decisions about insulin dosing, diet, and physical activity.

Importance of choosing the right CGM system:

Choosing the right CGM system is crucial for individuals with diabetes because it directly impacts their ability to monitor and manage their glucose levels effectively.

Here are some reasons why choosing the right CGM system is important:

  • Accuracy: CGM systems vary in terms of accuracy and reliability. Selecting a CGM system known for its high accuracy can provide more confidence in the glucose data and help users make better-informed treatment decisions.
  • User Experience: CGM systems differ in ease of use, comfort, and overall user experience. Finding a CGM system that aligns with personal preferences and lifestyle can enhance compliance and satisfaction with the device.
  • Data Integration: Some CGM systems offer seamless integration with insulin pumps, diabetes management software, and mobile apps, allowing users to centralize and analyze their glucose data alongside other relevant information. This integration can streamline diabetes management and provide a more comprehensive view of one’s health.
  • Cost and Insurance Coverage: CGM systems can vary in cost, and insurance coverage may differ depending on the device and its intended use (e.g., type 1 diabetes, type 2 diabetes, gestational diabetes). Considering the financial aspect and exploring insurance coverage options is important to ensure affordability and accessibility.
  • Support and Training: The availability of customer support, training resources, and educational materials related to the chosen CGM system can significantly impact the user’s ability to use and effectively benefit from the device.


By carefully evaluating and selecting the most suitable CGM system, like Dexcom g6 vs Freestyle libre 3, individuals with diabetes can optimize their glucose management, improve their quality of life, and reduce the risk of diabetes-related complications. When choosing a CGM system, it is advisable to consult with healthcare professionals for personalized guidance and recommendations.


Dexcom G6: Revolutionizing CGM Technology

Dexcom G6 is a continuous glucose monitor (CGM) system that monitors daily glucose levels. It consists of three parts: a sensor, a transmitter, and a receiver. The sensor is attached to the skin and measures glucose levels. The transmitter sends the readings to the receiver, which displays and stores the data. The system provides glucose readings every 5 minutes.

Sensor accuracy and glucose monitoring performance:

The Dexcom G6 sensor is designed to measure glucose levels beneath the skin accurately. It has a mean absolute relative difference (MARD) of 9%, which indicates its accuracy compared to glucose levels in the blood. A MARD below 10% is considered fairly accurate and reliable.

Continuous glucose readings and alerts:

The Dexcom G6 system provides continuous glucose readings, allowing users to monitor their daily glucose levels. It also offers alerts for low glucose levels, providing timely notifications to help manage diabetes.

Ease of use and user experience:

The Dexcom G6 system is designed to be user-friendly. It can be set up using either the Dexcom receiver or a compatible smart device like a smartphone. The sensor is easy to apply to the skin, and the transmitter is inserted into the sensor. The system provides real-time glucose readings and has a user-friendly interface for easy interpretation.

Compatibility with mobile devices and apps:

Dexcom G6 vs FreeStyle Libre 3 system is compatible with smartphones through the Dexcom G6 app. Users can receive glucose readings directly on their smartphones, making it convenient for on-the-go monitoring. The app allows users to share their glucose data with healthcare providers and caregivers.


  • Suitable for people as young as two years old
  • Can be paired with compatible insulin pumps
  • Provides low glucose alerts
  • Available in English and Spanish


  • Each sensor lasts up to 10 days and needs to be replaced
  • The sensor and transmitter have different replacement schedules
  • Takes about 2 hours to pair a new transmitter with a receiver or smartphone

Compared to Dexcom g6 vs Freestyle Libre 3, Dexcom G6 is a user-friendly continuous glucose monitoring system that provides accurate and continuous glucose readings, helpful alerts, and compatibility with mobile devices.


Freestyle Libre 3: Unleashing the Smart CGM Revolution

Freestyle Libre 3 is a continuous glucose monitoring (CGM) system for individuals with diabetes. It consists of two main components: a sensor and a mobile app.

The sensor is attached to the skin on the back of the upper arm and measures glucose levels from just below the skin. It takes glucose readings every minute throughout the day and stores them for up to 14 days.

The Freestyle Libre 3 app, installed on a compatible smartphone smart device, displays and stores glucose readings. This system eliminates the need for frequent fingerstick testing and provides users with real-time information about their blood sugar levels.

Sensor accuracy and glucose monitoring performance:

The Freestyle Libre 3 sensor is accurate in measuring glucose levels. It has a special measurement called MARD, which tells us how close its readings are to blood sugar levels. The Freestyle Libre 3 has a good MARD of about 7.9%, which means it’s reliable.

Flash glucose monitoring vs. continuous glucose monitoring:

The Freestyle Libre 3 monitors continuous glucose, constantly checking blood sugar levels. This differs from flash glucose monitoring, where you must manually scan the sensor to get the readings.

User experience and ease of use:

Using Freestyle Libre 3 is easy and convenient. The sensor is small and not noticeable when worn on the upper arm. You can even wear it while taking a bath or swimming. The mobile app is where you see your glucose readings, but remember that you need a compatible smartphone for it to work.

Compatibility with mobile devices and apps:

Freestyle Libre 3 needs a special app that you install on your smartphone. This app shows you the glucose readings and saves them. Just make sure your smartphone is compatible with the app before using it.


  • No more finger pricks!
  • Keep checking your blood sugar levels all the time
  • The sensor is small and easy to wear
  • Glucose readings appear on the app every minute
  • Waterproof for bathing and swimming.
  • Stores 14 days of glucose level data


  • The smartphone app is required for seamless operation.
  • During intense exercise, the sensor may become dislodged.
  • It typically takes around one hour for a new sensor to become operational.
  • The sensor should be stored within a temperature range of 36°F to 82°F for optimal performance.
  • After applying a new sensor, it is necessary to wait for 60 minutes before checking glucose levels.

It’s important to consult with a healthcare provider to determine if Dexcom g6 vs Freestyle Libre 3 suits individual needs and to address any specific concerns or questions.


Dexcom G6 vs Freestyle Libre 3; COMPARISON

Abbott & Dexcom: Manufacturers of CGM Devices

Both Dexcom and Abbott are well-known continuous glucose monitoring (CGM) device manufacturers. CGMs help people with diabetes monitor their blood glucose levels continuously throughout the day. Dexcom produces the G6 model, while Abbott manufactures the FreeStyle Libre 3 system.

Dexcomm g6 vs Freestyle libre 3 comparison: this image provide information about Dexcom g6 and freestyle libre 3 which one is better

Dexcom G6 vs FreeStyle Libre 3: Features and Specifications

The Dexcom G6 vs FreeStyle Libre 3 are popular CGM devices with unique features and specifications.

Dexcom G6: Offers real-time glucose monitoring, automatically updating your glucose levels every few minutes. It is FDA-cleared for adults and children as young as two years old. The G6 sensors need to be replaced every ten days, and it takes about 2 hours to start tracking your glucose levels after sensor insertion.
FreeStyle Libre 3: Also provides real-time glucose monitoring but operates slightly differently. It sends readings to a smartphone app every minute the sensor is scanned. It is currently available for adults and children over four years old. FreeStyle Libre 3 sensors last 14 days and begin tracking glucose within 1 hour of insertion.

Key Differences Between Dexcom G6 VS FreeStyle Libre 3

  • Users: Age Restrictions
    The Dexcom G6 is suitable for adults and children as young as 2. In contrast, the FreeStyle Libre 3 is recommended for adults and children over four years old.
  • Length of Use: Warm-up Period and Sensor Duration
    The warm-up period for the Dexcom G6 is around 2 hours before it starts providing accurate glucose readings. The G6 sensors need to be replaced every ten days. On the other hand, the FreeStyle Libre 3 has a shorter warm-up period of about 1 hour, and its sensors can be used for up to 14 days.
  • Frequency of Readings: Real-Time Updates
    The Dexcom G6 provides real-time updates every few minutes, sending glucose level information to a receiver, smartphone app, or compatible insulin pump. The FreeStyle Libre 3 also offers real-time updates, but it sends readings to a smartphone app every minute you scan the sensor.

Low Blood Sugar Alerts: Presence and Customization

Dexcom G6 vs FreeStyle Libre 3 has optional alerts for out-of-range glucose readings. However, the Dexcom G6 also includes special alarms for dangerously low glucose levels that cannot be turned off. This is particularly important for individuals with difficulty recognizing low blood sugar levels (hypoglycemia unawareness).

Insulin Pump Compatibility

Compared with the Dexcom g6 vs Freestyle Libre 3, The Dexcom G6 is compatible with certain insulin pumps such as Omnipod 5, iLet Bionic Pancreas, and Tandem t: slim X2. The FreeStyle Libre 3 is expected to have insulin pump compatibility shortly, but currently, it does not offer this feature.

Cost Considerations: Dexcom G6 vs FreeStyle Libre 3

The cost of CGM devices can vary depending on insurance coverage and specific pricing. Without insurance, the average cost for the Dexcom G6 includes a receiver, transmitter, and sensors. The Dexcom G6 receiver costs around $450, a transmitter costs around $300, and a set of 3 sensors costs around $440.

The FreeStyle Libre 3 system is available at a cost ranging from $0 to $75 per month for most commercially insured patients. The majority of covered patients typically pay less than $40 per month. Abbott also offers a convenient way to try the system with their MyFreeStyle program, which includes a free 14-day trial. Through this program, users receive a voucher for one free sensor, which can be redeemed at a preferred pharmacy.

Insurance Coverage for CGM Devices

Insurance coverage for CGM devices varies depending on individual insurance plans. CGMs are now covered by various insurances, including Medicare, providing access to individuals with diabetes. It’s important to contact your insurance provider to understand the coverage details and whether they cover Dexcom G6 vs FreeStyle Libre 3 or both.


Dexcom G6 vs Freestyle Libre 3: Which Device is Right For You?

Choosing between Dexcom G6 vs FreeStyle Libre 3 depends on your needs and preferences. It’s important to consider factors like how accurate and easy they are to use, their mobile apps’ features if they allow you to share your data, and how much they cost. Talking to your doctor can also give you helpful advice based on your health needs.


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When comparing Dexcom G6 vs Freestyle Libre 3, both CGM systems are outstanding for managing diabetes. Dexcom G6 excels in-app integration and data sharing, while Freestyle Libre 3 is known for its affordability and user-friendly design.

To make the right choice, consider which features match your lifestyle and diabetes management objectives. Consulting with your healthcare provider is crucial in selecting the CGM system that aligns with your specific needs, enabling you to lead a healthier and more controlled life with diabetes.


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Frequently Asked Questions

Which one is more accurate Dexcom G6 or Freestyle Libre 3?

Based on the study’s findings, the FreeStyle Libre 3 sensor was consistently more accurate than the Dexcom G6 sensor across all measurements during the entire study period. This study is the first one we know of that directly compares the main products from the two largest manufacturers of CGM systems that are widely used.

Which CGM is the cheapest?

The Freestyle Libre is often considered more affordable compared to the Dexcom G6, with the Dexcom G6 priced at approximately $300 per month and the Freestyle Libre priced at around $200 per month, according to certain sources.

What is world's smallest CGM?

The Libre 3 is being advertised as the smallest, thinnest, and most accurate continuous glucose monitoring (CGM) system available. According to Abbott, the company behind the device, the sensor is 70% smaller in size and uses 41% less plastic compared to previous versions.

Is Dexcom better than Libre 3?

Dexcom CGM systems check your glucose levels every 5 minutes and let you set personalized limits. When your readings go beyond these limits, the system sends alerts. This means you can find out if your levels are off track before you start experiencing symptoms, giving you the chance to take action in advance.

What factors should i consider when choosing between dexcom g6 and freestyle libre 3?

When you’re deciding which CGM system to choose, think about important factors like how accurate it is, how easy it is to use, what features the mobile app offers, whether you can share your data, and how much it costs. It’s also a good idea to talk to your healthcare provider because they can give you helpful advice based on your specific health needs. This way, you can pick the CGM system that’s just right for you.

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