Beyond Fingersticks: How Continuous Glucose Monitors Are Changing Diabetes Management

Managing diabetes involves paying close attention to what is happening with your blood glucose throughout the day. For many years, checking blood glucose meant using a traditional blood glucose meter and a fingerstick to get an individual reading. While blood glucose meters remain an important tool for many people, diabetes technology has continued to evolve.

Continuous glucose monitors, commonly called CGMs, have changed the way many people can monitor their glucose. Instead of providing only an individual snapshot, a CGM can provide ongoing information about glucose levels and how they are changing throughout the day.

For people who use them, this additional information can make it easier to recognize patterns and have more informed conversations with their healthcare team.

What Is a Continuous Glucose Monitor?

A continuous glucose monitor is a device designed to measure glucose levels throughout the day and night. A small sensor is typically worn on the body, and the system collects glucose information at regular intervals.

Depending on the specific CGM system, information may be displayed on a dedicated receiver, smartphone, smartwatch, or another compatible device.

Rather than requiring a fingerstick every time someone wants to see a glucose reading, a CGM can provide ongoing data that shows what is happening over time.

Different CGM systems have different features, wear times, insertion methods, alerts, and compatibility requirements. Because of these differences, choosing a system should be based on individual needs and guidance from a healthcare professional.

A Single Number Doesn’t Tell the Whole Story

Imagine checking your glucose and seeing a reading that appears to be within your target range. That number is useful, but it doesn’t necessarily tell you where your glucose is headed.

Is it rising? Is it falling? Has it been relatively stable?

This is one of the major differences between a traditional glucose reading and the additional information provided by a CGM.

Many CGM systems use trend information or arrows to help show whether glucose is changing and in which direction. This can provide context that an individual reading cannot.

Over time, the information collected by a CGM can also help reveal patterns. For example, someone may notice that their glucose tends to change after certain meals, during physical activity, overnight, or at particular times of day.

Recognizing these patterns can be an important part of diabetes management.

Understanding Glucose Trends

One of the most useful aspects of CGM technology is the ability to see glucose trends.

Instead of simply asking, “What is my glucose right now?” users can also begin looking at questions such as, “What has been happening over the last few hours?” or “What typically happens after I eat?”

These trends can provide valuable information to discuss with a healthcare provider.

For example, if glucose regularly rises after a particular meal or drops during certain periods of activity, that information may help a healthcare professional better understand the individual’s overall glucose patterns.

However, CGM information should not be used to independently change medication or insulin doses unless a healthcare provider has provided specific instructions for doing so.

Alerts Can Provide Another Layer of Awareness

Many CGM systems include customizable alerts.

Depending on the system, alerts may notify users when glucose reaches a high or low level, when glucose is changing rapidly, or when other conditions occur.

These alerts can provide an additional layer of awareness, particularly for people who experience episodes of low or high glucose or who may not always recognize changes in their glucose levels.

For some people, alerts can also provide peace of mind. Family members or caregivers may be able to receive information through compatible features on certain systems, although available options vary by device.

CGMs Can Help Identify Patterns

Diabetes management isn’t exactly the same every day.

Meals, physical activity, stress, illness, sleep, medications, and many other factors can influence glucose levels. Because of this, it can sometimes be difficult to understand why glucose is changing based on occasional readings alone.

CGM data can provide a larger picture.

Looking at glucose information over multiple days can help reveal recurring patterns. A healthcare provider can then use that information, along with other factors, when evaluating an individual’s diabetes management plan.

This doesn’t mean a CGM makes diabetes management automatic. Instead, it provides another source of information that can help people and their healthcare teams make more informed decisions.

CGMs and Everyday Life

One of the reasons CGMs have become increasingly popular is their potential to fit into everyday routines.

People with diabetes may be balancing work, school, family responsibilities, exercise, travel, meals, and other activities. Having access to ongoing glucose information can make monitoring more convenient for some users.

Different systems are designed differently, so comfort and convenience can vary from person to person.

Factors such as sensor placement, wear time, smartphone compatibility, alert preferences, insertion process, and insurance coverage may all play a role when considering a CGM.

Choosing the Right CGM

There isn’t necessarily one CGM that is right for everyone.

Different systems offer different features, and technology continues to change. Some people may prioritize ease of use, while others may be more interested in specific alerts, integration with an insulin pump, smartphone features, or other capabilities.

Insurance coverage is also an important consideration.

Before choosing or switching to a CGM, talk with your healthcare provider and insurance provider about what options are appropriate and covered for you.

At Southeast Diabetes, helping patients access the diabetes supplies and technology they need is an important part of what we do.

Technology Is a Tool, Not a Replacement for Your Healthcare Team

CGMs provide information, but they don’t replace professional medical care.

Your healthcare provider can help you understand your glucose patterns and determine how the information fits into your overall diabetes management plan.

It’s also important to remember that CGM readings and blood glucose meter readings may not always be identical because the technologies measure glucose in different ways. If you have questions about a reading, symptoms that don’t match your CGM information, or concerns about your device, follow the instructions provided for your specific system and contact your healthcare professional when appropriate.

Seeing the Bigger Picture

Diabetes technology has come a long way, and CGMs have given many people access to information that wasn’t previously available in such a convenient format.

Instead of seeing only individual glucose readings, users can see trends, patterns, and changes throughout the day. That bigger picture can help people better understand their diabetes and give healthcare providers more information to work with.

If you’re considering a CGM or need help obtaining your diabetes supplies, Southeast Diabetes is here to help you understand your options and navigate the process.

Better information can lead to better conversations, better understanding, and more informed diabetes management.