Important Safety Information for Users of FreeStyle Libre Readers: To learn how to safely store, charge and use your Reader, please visit www.FreeStyleBattery.com for more info.

Back to Knowledge Base
Diabetic Supplies / CGM

What is a continuous glucose monitor and how does it work?

By Specialty Medical Equipment
Updated:
Reviewed by Medical Review Team

Quick Answer

Continuous Glucose Monitors (CGMs) are wearable devices that track your blood sugar levels throughout the day and night without finger pricks. A small sensor inserted under the skin measures glucose in interstitial fluid and transmits readings to a receiver or smartphone app every few minutes. CGMs ...

Continuous Glucose Monitors (CGMs) are wearable devices that track your blood sugar levels throughout the day and night without finger pricks. A small sensor inserted under the skin measures glucose in interstitial fluid and transmits readings to a receiver or smartphone app every few minutes. CGMs show trends and patterns, alert you to highs and lows, and help you and your doctor make better treatment decisions. Popular CGMs include Dexcom and FreeStyle Libre. CGM coverage varies by insurance; Medicare covers CGMs for qualifying patients. Contact Specialty Medical Equipment to check your eligibility.

More Information

CGMs continuously track glucose levels with a wearable sensor, showing trends and alerting to dangerous levels.

Medical Disclaimer

The information provided in this article is for educational purposes only and should not be considered medical advice. Always consult with your healthcare provider before making any decisions about your health or treatment.

Related Content

FAQ

Diabetic Testing Supplies: What You Need

Diabetic testing requires a glucose meter, matching test strips, lancets, and a lancing device for blood sugar monitoring.

Read more about Diabetic Testing Supplies: What You Need
FAQ

Insurance Coverage for Diabetic Supplies

Medicare and most insurance plans cover diabetic supplies including meters, test strips, lancets, and CGMs with a prescription.

Read more about Insurance Coverage for Diabetic Supplies
FAQ

Insulin Pumps: An Overview

Insulin pumps deliver continuous insulin through a wearable device, offering precise control and fewer daily injections.

Read more about Insulin Pumps: An Overview

Need more help?

Our support team is available to answer your questions.