Questions You Should Know about CGM Patches

By: Diana Isaacs, PharmD, BCPS, BCACP, BC-ADM, CDCES, FADCES, FCCP

SCICO CARE supply professional and honest service.

Many people with diabetes consider using continuous glucose monitors (CGMs) for their diabetes management, and CGMs have a lot of helpful features. Their use is expanding, and they benefit many people with diabetes. It is recommended to reach out to your healthcare team to learn if a CGM is right for you and, importantly, to continue to work with your healthcare team after getting a CGM to get the most benefit out of it and by customizing the different features and alerts.

What is a CGM?
 

Continuous glucose monitors, or CGMs, are small wearable devices that track glucose levels continuously throughout the day and night. Some CGMs display data continuously, while others only display data after being swiped by a reader or smartphone. Some CGMs can notify you of highs and lows to help you manage your glucose levels. CGM use has been studied and approved in adults and children as young as 2 years old. See the What is CGM article for more information.

How is CGM different than BGM?
 

Continuous glucose monitoring is different than blood glucose monitoring (BGM) via a traditional blood glucose meter. BGM measures the glucose level in the capillary blood vessels, whereas CGM measures the glucose in the interstitial fluid, which is the fluid between the cells in your tissues. BGMs check glucose at a given point in time and require a fingerstick. A CGM monitors glucose nearly continuously and records readings every 1-15 minutes, depending on the device.

What are the types of CGMs?
 

CGMs can be for either personal or professional use. Personal CGMs are owned by the person with diabetes and most of them can be used to make decisions about diabetes management. Professional CGMs are owned by the healthcare center. In this case, a healthcare provider analyzes data retrospectively to understand the glucose patterns of the patient. Some professional CGMs do not display the data while the person with diabetes is wearing it, but others do show the glucose data in real time.

How does CGM Work?
 

A continuous glucose monitoring system is comprised of three parts: a sensor, a transmitter, and a viewing device. The sensor sits on the skin, typically on the abdomen or the back of the arm, and contains a thin filament that goes through the skin into the interstitial fluid to measure the glucose level. It uses a transmitter to send the current glucose level to a receiver.

Some devices have the transmitter and sensor combined in one piece, while other CGMs require a separate step of attaching the transmitter to the sensor. Depending on which CGM device you are using, you may use a reader or receiver as your viewing device, or you may use a smart app.

See the What is CGM article for more information.

Who should use CGM?
 

A continuous glucose monitor is indicated for diabetes management. You should discuss with your healthcare provider if a CGM is right for you. Any person with Type 1 diabetes or any person with Type 2 diabetes using an intensive insulin regimen can benefit from a personal CGM due to its ability to provide continuous information on what the glucose level is doing. This makes it possible to detect unsuspected hypoglycemic events and see trends.

Those with Type 2 diabetes taking basal insulin can also benefit from a personal CGM. People with Type 2 diabetes who take oral medications or non-insulin injectables may also benefit from periodic use of professional CGM or from a personal CGM and should discuss using a CGM with their healthcare provider.

CGM use can allow a person to learn how food, medications, physical activity, stress and other factors impact glucose levels in real time and help them apply the learnings to better understand and manage their glucose levels. You should also have a backup blood glucose monitor for traditional blood glucose testing through fingersticks if you find your CGM glucose reading does not match how you are feeling, for use while your CGM is warming up, and for times when you may not be wearing your CGM.

Does insurance cover CGM?
 

A CGM device and supplies require a prescription. Many insurance plans will cover continuous glucose monitors, but often require a prior authorization to determine eligibility. The healthcare provider will need to submit the prior authorization to the insurance company to seek approval and the CGM will need to be covered by the patient’s plan. Individual plan coverage varies. Depending on the plan, the CGM device may be obtained directly from the pharmacy, but some insurance plans, including Medicare, require the CGM to be obtained through a durable medical equipment supplier. Depending on a person’s plan, they may have to pay a co-pay or first meet their deductible.

How long does a CGM last?
 

A continuous glucose monitoring sensor generally needs to be replaced every 7 to 14 days, depending on the device. The exception is one device that has an implanted sensor, which is replaced every 3 months or longer. For devices that have a detachable transmitter, this component can last 3 months to a year or more depending on the device. Some devices require that the transmitter be charged in-between uses.

How do I get a CGM?
 

Talk to your healthcare team and ask about your options. All continuous glucose monitors require a prescription. Professional CGMs can also be a great option to see what it’s like to wear a CGM and decide if a CGM is right for you. Once you decide that you want a personal CGM, you can either ask your healthcare team to initiate the process or visit the website of the specific device to initiate the process of verifying insurance benefits and facilitating a prescription request.

How do I set up alerts on a CGM?
 

Many continuous glucose monitoring devices allow for customized alerts. For example, one can set a high alert and a low alert. Many also have options to set rise rate and fall rate alerts to let you know if the glucose is rising or falling quickly. There are also options to repeat the alerts. For example, if a low blood sugar persists for 15 to 30 minutes, it could be helpful for the alert to repeat, so a person knows their glucose is still low. Some also have predictive alerts that can notify you if the CGM determines that the low or high glucose alert will be reached within a certain amount of time, such as 20 or 30 minutes. This can make it even easier to prevent low or high glucose levels.

Your healthcare team can work with you to customize these alerts. The goal is to optimize Time in Range, which is between 70mg/dL and 180mg/dL. The goal for most people is for the Time in Range to be 70% or more.

Alerts can be helpful to increase Time in Range but must be balanced in a way to avoid alert fatigue. Some people may set the low alert to 70mg/dL. Other people want to know if their glucose is falling earlier and may set it for 75 or 80 or even higher. Similarly, for the high alert, there are some who want to know when they exceed 180mg/dL, but many others who prefer to set a more relaxed high alert, such as 250 or 300. Some may even choose to turn off the high alert and only set alerts for low blood sugars. Keep in mind that with a CGM, you can look at your blood sugars at any time, so the alerts are there to help keep you in a safe range and to supplement your readings; they should not become an inconvenience.

Can I share my CGM data with others?
 

One of the many benefits of CGMs is that CGM data, including alerts, can be shared with friends, caregivers, loved ones, or clinicians through use of mobile apps. The number of people data can be shared with varies by device. Data sharing can provide the person with diabetes with peace of mind knowing they have extra support in monitoring their glucose levels.

While there are many benefits to using a CGM, it is important to talk to your doctor to find out if a CGM is right for you.

Sources:

Beyond Type 1. CGM: Continuous Glucose Monitoring. https://beyondtype1.org/cgm-continuous-glucose-monitor/. Accessed June 24, .

Schumacher CA, Isaacs D, Collier I, Klinkebiel D. Use of continuous glucose monitoring to improve glycemic management: A clinican’s guide. https://doi.org/10./jac5.

Megan Munoz. How is a Continuous Glucose Monitor Different than My Glucose Meter? https://type2diabetes.com/living/continuous-glucose-monitor. Accessed June 24, .

Association of Diabetes Care & Education Specialists (ADCES). Personal Continuous Glucose Monitoring Implementation Playbook. https://www.diabeteseducator.org/docs/default-source/practice/educator-tools/cgm-playbooks/personal-cgm-playbook.pdf?sfvrsn=2. Accessed June 24, .

Edelman SV, Argento NB, Pettus J, et al. Clinical implications of real-time and intermittently scanned continuous glucose monitoring. Diabetes Care ;41:–74.doi:10./dc18-

American Diabetes Association. 7. Diabetes technology: Standards of Medical Care in Diabetes—. Diabetes Care ;44(Suppl. 1):S85–S99. https://doi.org/10./dc21-S007. Accessed June 24, .

Contact us to discuss your requirements of Flexible Sports Tape. Our experienced sales team can help you identify the options that best suit your needs.

Martens T, Beck RW, Bailey R, et al. Effect of Continuous Glucose Monitoring on Glycemic Control in Patients With Type 2 Diabetes Treated With Basal Insulin: A Randomized Clinical Trial. JAMA. ;325(22):–. doi:10./jama..

Living with diabetes can be challenging, but advancements in medical technology are making it easier to manage blood sugar levels and maintain a healthy lifestyle. One such innovation is the CGM patch, a game-changer in diabetes care. CGM, or Continuous Glucose Monitoring, has revolutionized the way people monitor their blood sugar levels, and CGM patches offer a convenient, user-friendly way to keep track of glucose levels in real-time.

In this article, we’ll explore everything you need to know about CGM patches, including how they work, their benefits, how to use them, and tips for choosing the right patch for your needs.

What Is a CGM Patch?

A CGM patch is a small wearable device designed to continuously monitor glucose levels throughout the day and night. Unlike traditional fingerstick blood glucose tests that provide a single reading, CGM patches deliver real-time glucose data, helping users make informed decisions about their diet, exercise, and insulin management.

The device typically consists of:

• A small sensor: Inserted just under the skin, it measures glucose levels in the interstitial fluid.
• A transmitter: Sends data wirelessly to a receiver, smartphone, or smartwatch.
• An adhesive patch: Secures the sensor and transmitter to the skin, ensuring comfort and stability during everyday activities.

How Does a CGM Patch Work?

The CGM patch works by detecting glucose levels in the interstitial fluid — the fluid that surrounds your body’s cells. Here’s a step-by-step breakdown of how it functions:

1. Sensor Placement: The sensor is placed on the skin, usually on the arm, abdomen, or thigh. It uses a tiny filament that penetrates the top layer of the skin to detect glucose levels.
2. Continuous Monitoring: The sensor continuously measures glucose levels and transmits data to a connected device via Bluetooth or another wireless method.
3. Real-Time Alerts: Many CGM systems provide alerts for high or low glucose levels, allowing users to act quickly.
4. Data Storage and Insights: The CGM patch stores data, which can be accessed via an app or dedicated device. This data helps users and healthcare providers identify trends, patterns, and areas for improvement.

Benefits of Using a CGM Patch

The CGM patch offers numerous benefits, making it an essential tool for people with diabetes. Here’s why it’s worth considering:

1. Eliminates Fingersticks

One of the biggest advantages of a CGM patch is reducing or eliminating the need for fingerstick testing. While occasional calibration may be required with some devices, most CGM patches are designed to work independently of traditional glucose meters.

2. Real-Time Monitoring

With a CGM patch, you receive continuous glucose readings, typically updated every 5–15 minutes. This real-time data helps users better understand how food, exercise, and stress impact their glucose levels.

3. Improved Glucose Control

By identifying glucose trends, CGM patches empower users to make proactive adjustments to their lifestyle or medication. This can lead to better glycemic control and reduce the risk of complications such as neuropathy or cardiovascular disease.

4. Customizable Alerts

CGM patches come with customizable alerts that notify users when glucose levels are too high or low. This feature is especially beneficial for those who experience frequent hypoglycemia or hyperglycemia.

5. Enhanced Quality of Life

For many, wearing a CGM patch means greater peace of mind. The ability to monitor glucose levels discreetly and continuously allows users to focus on daily activities without constant worry.

Who Can Benefit from a CGM Patch?

A CGM patch is suitable for a wide range of individuals, including:

• People with Type 1 Diabetes: Frequent glucose monitoring is essential for those managing Type 1 diabetes, and CGM patches provide a less invasive, more efficient alternative to traditional methods.
• People with Type 2 Diabetes: Individuals on insulin therapy or those seeking tighter glucose control can benefit from the real-time insights provided by CGM patches.
• Parents of Children with Diabetes: CGM patches allow parents to monitor their child’s glucose levels remotely, offering added security and convenience.
• Athletes with Diabetes: Understanding how physical activity affects glucose levels can help athletes optimize their performance and avoid dangerous blood sugar fluctuations.

How to Use a CGM Patch

Using a CGM patch is simple, but proper application and maintenance are crucial for accuracy and comfort. Here’s a step-by-step guide:

1. Clean the Skin: Wash and dry the application site to ensure the adhesive sticks properly.
2. Insert the Sensor: Follow the manufacturer’s instructions to insert the sensor. Most systems include an applicator for easy, painless insertion.
3. Attach the Transmitter: Snap the transmitter onto the sensor to activate the device.
4. Connect to the App: Pair the CGM patch with your smartphone or receiver to start receiving data.
5. Monitor Regularly: Check your glucose levels throughout the day and pay attention to alerts.
6. Replace as Needed: Most CGM patches need to be replaced every 7–14 days, depending on the model.

Choosing the Right CGM Patch for You

When selecting a CGM patch, consider the following factors:

1. Accuracy: Look for a device with proven accuracy to ensure reliable readings.
2. Ease of Use: Choose a system that is easy to apply, maintain, and interpret.
3. Compatibility: Ensure the patch works with your smartphone, insulin pump, or other devices.
4. Cost: Check with your insurance provider to understand coverage options, as CGM systems can be expensive.
5. Wear Duration: Consider how long the patch lasts before requiring replacement.
6. Lifestyle Needs: Some patches are better suited for active individuals, while others prioritize discreteness.

Tips for Maximizing Your CGM Patch Experience

To get the most out of your CGM patch, follow these tips:

1. Apply Correctly: Clean and dry the skin thoroughly before applying the patch to avoid irritation or detachment.
2. Rotate Sites: Regularly change the application site to prevent skin irritation or scar tissue buildup.
3. Stay Hydrated: Proper hydration helps ensure accurate glucose readings.
4. Calibrate If Needed: Some devices require occasional calibration with a traditional glucose meter; follow the manufacturer’s guidelines.
5. Protect the Patch: Use adhesive covers or bands to secure the patch during workouts or swimming.
6. Monitor Trends: Review the data regularly to identify patterns and adjust your diabetes management plan accordingly.

Common Concerns About CGM Patches

1. Will the Patch Fall Off?

Most CGM patches use strong adhesives to stay in place, even during exercise or swimming. However, if you experience detachment, additional adhesive tapes or patches can help.

2. Are CGM Patches Painful?

Inserting the sensor may cause slight discomfort, but most users report that wearing the patch is painless and barely noticeable.

3. Is a CGM Patch Accurate?

Modern CGM patches are highly accurate, though occasional discrepancies can occur. Always consult your healthcare provider if readings seem inconsistent.

4. Are CGM Patches Expensive?

While CGM systems can be costly, many insurance plans cover them. Be sure to check with your provider for details.

Conclusion

The CGM patch is a revolutionary tool that simplifies glucose monitoring and enhances diabetes management. Whether you’re living with Type 1 or Type 2 diabetes, this wearable technology provides real-time insights, reduces the burden of fingersticks, and improves overall quality of life. With various brands and models available, it’s easier than ever to find a CGM patch that fits your needs and lifestyle.

If you’re considering a CGM patch, consult with your healthcare provider to determine the best option for your diabetes management plan. By embracing this cutting-edge technology, you can take greater control of your health and live a more empowered life.

How Aptiva Medical Can Help You

Managing diabetes doesn’t have to be overwhelming. At Aptiva Medical, we understand the challenges of balancing your health and daily life, which is why we’re dedicated to providing cutting-edge solutions like Continuous Glucose Monitoring (CGM) patches. These innovative devices offer real-time insights into your glucose levels, helping you make informed decisions about your diet, exercise, and insulin use. With a CGM patch, you can take control of your diabetes management and enjoy greater freedom, accuracy, and peace of mind.

Aptiva Medical is here to guide you every step of the way. Our team can help you choose the right CGM patch for your lifestyle, assist with insurance coverage, and provide personalized support to ensure a smooth transition to this life-changing technology. Let us simplify the process so you can focus on what matters most: living a healthier, more confident life. Take the first step with Aptiva Medical today and discover how a CGM patch can transform your diabetes care.