Continuous glucose monitoring device: 6 questions to ask your doctor

The process of checking blood glucose received a modern improvement with the recent arrival of the continuous glucose monitoring device (CGM). Prior to the technology's inception, painful and time-consuming fingersticks were a way of life for millions of people living with diabetes.

Using a CGM often leads to improvements to A1C, time in range, and quality of life — so it's important to continue increasing access. Currently, only an estimated 20% of Americans living with type 1 diabetes (t1d) use CGM technology. Accordingly, helping folks learn more about the options available to them is crucial.

If you're interested in exploring how adding a CGM to your diabetes management regimen can improve your glycemic control, you may be wondering where to begin. Well, wonder no more: We've got answers!

The first step is to have a preliminary understanding of a CGM and how it could benefit you. When you feel comfortable, you can then reach out to your doctor to discuss what you've learned and ask whether this could be a helpful addition for your health and well-being. Here are six questions to ask your doctor about CGM technology.

1. What is a CGM?

A CGM, or continuous glucose monitoring device, is a medical device that measures blood glucose in real time on a consistent interval while the individual is wearing it on their person. It can help spot trends that may indicate an upcoming high or low, making it a valuable tool for diabetes management. Your doctor can help you understand how it might improve your personal situation and guide you toward a particular device.

2. What parts make up a CGM?

Current CGM models have three main components: a sensor, transmitter, and reader. The suggested placement and life of a sensor or transmitter can vary by manufacturer. A CGM reader may be a standalone device provided by the manufacturer and may also include the ability to use a compatible cell phone with corresponding mobile app(s). Your doctor can suggest placement and provide advice around navigating different weather and seasonal scenarios while using CGM technology,

3. Do I still have to test my blood glucose with a meter while using a CGM?

Some of the more recent CGM models have received expanded indication authorization from the Food and Drug Administration, meaning that CGM readings can be used in place of fingerstick blood glucose readings to make treatment and insulin dosing decisions. However, there are occasions where verifying your blood glucose with a fingerstick is appropriate, including and especially when you feel the CGM data isn't accurate.

The basic rule is if you have any doubt about your CGM's accuracy, take out your blood glucose meter and check it the old-fashioned way.

4. What are some of the pros and cons of using a CGM?

Like many aspects of managing diabetes, your experience may vary! While some people may struggle with challenges like affordability and access, adhesive sensitivities, and a general dislike of wearing a medical device, there are also many positives to consider.

Some of the benefits of using a CGM can include:

Reduced risk of hypoglycemia by way of early warning and ability to head it off early
Increased ability to make timely treatment decisions in the moment and reflect back with the help of a clinician to make adjustments
Increased quality of life as related to diabetes
More time in range (TIR) and lower A1C

5. What CGM options do I have?

Currently, four companies make CGMs that are commercially available for patients in the U.S.: Medtronic, Dexcom, Abbott, and Senseonics. It's important to research the similarities and differences between the available models, explore your insurance coverage for continuous glucose monitoring devices, and discuss with your doctor to figure out which one(s) may be right for you.

6. How can I access CGM technology?

CGMs are available by prescription. You'll need to speak with your doctor to determine which type of CGM will work best for you, and they can write the prescription. If you have health insurance, you may receive coverage for a CGM through either your durable medical equipment coverage (DME) or pharmacy benefits.

Potential barriers may include coverage, cost, and processes like prior authorizations, so it's important to speak with your medical team to see what resources may be available to help you access this technology. The technology can be well worth the wait, so keep your eyes on the prize even in the face of delays or setbacks.

Could a CGM be right for you?

Sometimes the most challenging part of making a change to your diabetes management regimen is simply getting the conversation started. These six questions can help get the ball rolling and move you closer to the improvements you're looking to make.

Living with #diabetes and thinking you might want to give continuous glucose monitoring technology a try? Join the club! Asking your doctor these 6 questions can help you better understand how a #CGM might benefit your daily #t1d management, via @edgeparkmedical Tweet

As with every other aspect of managing diabetes, using a continuous glucose monitoring device is an individual choice. Whether you decide to move forward with a CGM or not, you'll be able to make an informed decision about your care.

Curious to learn more about the benefits of CGM technology? Read up on the advantages and important considerations through the library of articles on Health Insights.