glucolistBETA v0.2.1

Be a diabetic pro.

Tips, tools, apps, books– whatever you need to improve life with diabetes.

Request features or leave feedback

Dexcom G7 Continuous Glucose Monitor

The Dexcom G7 is the latest generation continuous glucose monitoring system from Dexcom, featuring improved accuracy and a completely redesigned form factor.

Technical Specifications

  • Sensor Duration: 10 days
  • Warmup Time: 2 hours
  • MARD: 8.2% (Mean Absolute Relative Difference)
  • Sensor Size: 60% smaller than G6
  • Reading Frequency: Every 5 minutes (288 readings per day)
  • Bluetooth Range: Up to 20 feet
  • Water Resistance: IP28 (2.4 meters for 24 hours)
  • Age Indication: 2+ years old
  • Calibration: Factory calibrated (no fingersticks required)

Key Features

Hardware

  • All-in-one sensor and transmitter design
  • 30-minute grace period when replacing sensors
  • Smaller insertion device
  • Built-in safety features
  • Direct-to-Watch capability

Software

  • Real-time glucose readings
  • Customizable alerts and alarms
  • Predictive low glucose warnings
  • Share data with up to 10 followers
  • Integration with various insulin pumps
  • 12-hour trend arrows

Compatibility

Mobile Devices

  • iOS 13.0 or later
  • Android 8.0 or later
  • Full list of compatible devices on Dexcom website

Insulin Pumps

Alternative CGM Options

Data Features

Reporting

  • Ambulatory Glucose Profile (AGP)
  • Time in Range statistics
  • Pattern recognition
  • Customizable reports
  • Data export capabilities

Sharing

  • Real-time sharing with followers
  • Healthcare provider data sharing
  • Integration with electronic health records
  • API access for developers

Common Issues and Solutions

Signal Loss

  • Keep device within Bluetooth range
  • Check for interference from other devices
  • Ensure transmitter is properly seated

Accuracy Issues

  • Clean sensor site properly
  • Avoid pressure on sensor
  • Choose appropriate insertion sites
  • Wait full warmup period

Adhesive Problems

  • Use skin preparation products
  • Consider over-patches
  • Avoid locations with high movement

Tips for Success

Insertion

  1. Choose sites with adequate subcutaneous fat
  2. Rotate sites regularly
  3. Clean area thoroughly with alcohol
  4. Allow skin to dry completely
  5. Avoid areas with scarring or irritation

Maintenance

  • Keep receiver/phone charged
  • Update app regularly
  • Monitor sensor site for irritation
  • Keep spare sensors available
  • Document sensor changes

Insurance and Cost

  • Retail Cost: ~$400/month
  • Insurance Coverage: Varies by provider
  • Prior Authorization: Often required
  • Medicare Coverage: Available with documentation
  • FSA/HSA Eligible: Yes

Resources

Official

Support

  • Technical Support: 1-888-738-3646
  • Online Support Portal
  • Dexcom Clarity for data analysis

Community

  • Reddit: r/dexcom
  • Facebook support groups
  • Local diabetes support groups

Related Techniques