Continuous Glucose Monitoring Systems
CONTINUOUS GLUCOSE MONITORING SYSTEMS
A Continuous Glucose Monitoring (CGM) System is a prescription device that provides continuous, real-time, dynamic blood glucose measurements throughout the day and night. CGM systems have three basic parts: a sensor (inserted under the skin to measure glucose levels), a transmitter (connects to sensor and sends data via wireless technology), and a display device (a commercially-available receiver/monitor or a compatible smart device with a downloaded app to display/store results). Some systems only have two main parts: a sensor (measures and transmits) and a reader (receives and displays readings from the sensor) or a recorder (collects and stores data from the sensor). CGMs can be used for patients on insulin injections or insulin pump therapy for Type 1 or Type 2 diabetes. They are available either for personal use or for diagnostic use* by healthcare professionals (to continuously record glucose readings and aid with patient’s glucose management).

CGM systems must be removed before Magnetic Resonance Imaging (MRI) and Computed Tomography (CT) procedures, diathermy treatments, and X-ray procedures. They should be avoided in pregnant, dialysis or critically-ill patients.
CGMS Age Glucose range (mg/dL) Parts Sensor insertion sites Sensor life1 (days) Transmitter life/range Calibration2 Display device Features
ABBOTT LABS • myfreestyle.com
FreeStyle Libre ≥18yrs 40–500 Sensor, reader Back of arm 10 None Handheld reader3

• Designed to replace fingerstick testing (use blood glucose meter as backup) to make treatment decisions based on sensor glucose readings

• Sets up reminders

• No alarms or alerts without a sensor scan

• Sensor stores glucose readings every 15mins

• Reader stores about 90 days of glucose history and notes

• Works with FreeStyle Libre software

• False elevation with vitamin C and reduction with salicylic acid

FreeStyle Libre Pro* ≥18yrs 40–500 Sensor, reader Back of arm 14 None Handheld reader4

• For use by healthcare professionals only

• Does not provide real-time results (patient must use blood glucose meter)

• Readings are only made available to patients through consultation with provider

• Sensor stores glucose readings every 15mins for up to 14 days

• Detects glucose trends and tracks patterns

• Works with FreeStyle Libre Pro software

• False elevation with vitamin C, acetaminophen and reduction with salicylic acid

DEXCOM • dexcom.com
Dexcom G4 Platinum ≥18yrs 40–400 Sensor, transmitter, receiver Abdomen 7 6mos (reusable); up to 20 feet unobstructed Every 12hrs Receiver

• Adjunctive device to complement standard home glucose monitoring systems (does not replace a blood glucose meter); do not use for treatment decisions

• Glucose alerts and alarms

• Allows for recording event markers

• Receiver stores 30 days of glucose data

• Connects with Dexcom Share system to transfer data to another person

• False elevation with acetaminophen

Dexcom G4 Platinum Pediatric 2–17yrs 40–400 Sensor, transmitter, receiver Abdomen, upper buttocks
Dexcom G5 Mobile ≥2yrs 40–400 Sensor, transmitter, receiver Abdomen (≥2yrs), upper buttocks (2–17yrs) 7 3mos (reusable); up to 20 feet unobstructed Every 12hrs Receiver or own smart device5,7

• Designed to replace fingerstick testing (use blood glucose meter as backup) to make treatment decisions based on sensor glucose readings

• Personalized glucose trend alerts and alarms

• Works with Dexcom Share system to transfer data to another person

• False elevation with acetaminophen

Dexcom G6 ≥2yrs 40–400 Sensor, transmitter, receiver Abdomen (≥2yrs), upper buttocks (2–17yrs) 10 3mos (reusable); up to 20 feet unobstructed None Receiver or own smart device5,7

• Designed to replace fingerstick testing (use blood glucose meter as backup) to make treatment decisions based on sensor glucose readings

• Slim wearable profile and one-button sensor insertion

• Customizable alerts for two periods of time within 24hrs (AM & PM)

• 20-min advance warning of a potential severe hypoglycemic event

• Works with Dexcom Share system to transfer data to another person

MEDTRONIC • medtronic.com
Guardian REAL-Time ≥7yrs 50–400 Sensor, transmitter, monitor Abdomen 3 122 times or 12mos, whichever comes first (reusable); 6 feet 3–4 times daily Monitor

• Designed to complement standard home glucose monitoring systems (does not replace a blood glucose meter); do not use for treatment decisions

• Up to 8 customizable alerts and alarms

• Displays 3-, 6-, 12- and 24-hr glucose trend graphs

• Allows for recording event markers

• Works with CareLink Therapy Management software

iPro2* ≥18yrs 40–400 Sensor, recorder,4 docking system Abdomen 6 4 times daily Own computer6

• For use by healthcare professionals only

• Designed to complement standard glucose monitoring devices (does not replace a blood glucose meter)

• Does not provide real-time results (must use blood glucose meter)

• Recorder4 can be used 60 times; discard afterwards

• Patient must return to clinic within 10 days of the end of the session

• Works with CareLink iPro Therapy Management software

SENSEONICS • eversensediabetes.com
Eversense ≥18yrs 40–400 Sensor, transmitter Upper arm 90 12mos (reusable); up to 24.9 feet Twice daily (10–14hrs apart)8 Own smart device7

• Adjunctive device to complement standard home glucose monitoring systems (does not replace a blood glucose meter)

• Provides long-term (up to 3mos) continuous monitoring via under-the-skin-sensor (implanted by healthcare provider)

• Removable, water-resistant & rechargeable transmitter

• Customizable alerts and notifications including on-body vibe alerts

• Provides patterns & trends

• Works with Eversense Data Management Software Program

NOTES

1 Sensors are single-use only; do not reuse or use beyond its sensor life.

2 Calibrate CGM system with glucose readings from a commercially-available blood glucose meter.

3 With built-in blood-glucose meter that works with FreeStyle Precision Neo test strips.

4 Reader or recorder is intended for use to gather data from sensors from multiple patients.

5 Does not work with multiple smart devices at the same time; not interchangeable during a sensor session.

6 Results displayed via a software in the computer.

7 For a complete list of compatible smart devices, see full product information.

8 Calibration screen automatically appears when time to calibrate.

Not an inclusive list of medical devices. Please see company websites for detailed product information.

Created 10/2019