Where to Buy a Continuous Glucose Monitor (CGM) and How to Choose the Right Option

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If you’re considering a continuous glucose monitor (CGM), you’re not alone. More people (with and without diabetes) are turning to CGMs as a tool to gain real-time insights into their blood sugar levels. Tracking glucose fluctuations can help optimize energy levels and mood, improve metabolic health, optimize athletic performance, and fine-tune nutrition strategies. But, with multiple brands, features, and price points available, choosing the right CGM can feel overwhelming.

The good news is, whether you're looking for a prescription-based device or an over-the-counter option, there’s a CGM that fits your needs. In this guide, we’ll break down where to buy a CGM, what to look for when selecting the best option, and key factors to consider—like accuracy, app integrations, and cost—so you can make an informed choice for your health goals.

Where to Buy a CGM

There are several ways to obtain a CGM, each with its own benefits and limitations. The most common options include:

1. Through a Prescription (Insurance-Based)
2. Over the Counter (Direct Purchase from the Manufacturer)
3. Through a Wellness Program or Subscription Service

1. Prescription-Based CGM (Insurance Coverage)

If you have diabetes or another qualifying condition, your healthcare provider may prescribe a CGM, which can be covered partially or fully by insurance.

Pros:

✅ Potentially lower cost – Insurance may cover a portion or all of the expenses, making it the most affordable option for those who qualify.
✅ Access to advanced models – Certain CGMs, like Dexcom and Medtronic, offer features tailored for medical conditions and integrate with insulin pumps.
✅ Medical oversight – A healthcare provider can help interpret the data and guide you on how to use it effectively.

Cons:

❌ Requires a diagnosis – Insurance typically covers CGMs only for individuals with diabetes or certain metabolic conditions.
❌ Approval process – You may need prior authorization, which can delay access.
❌ Limited choice – Insurance providers may only cover specific models, limiting your options.

2. Over-the-counter (Direct Purchase from the Manufacturer, No Prescription Required)

In 2024 the FDA cleared the first over-the-counter CGM. This new development means that you do not have to go through a physician to obtain a CGM (whether you have diabetes or not). So, whether you want to monitor your blood sugar for longevity, mood/energy stabilization, performance, or general health, purchasing a CGM directly from a manufacturer is a viable option. While pricing varies, you can buy over-the-counter CGMs via Dexcom and Abbott’s.

Where to Buy:

• Dexcom offers the Stelo Glucose Biosensor
• Abbott offers the New Lingo Biosensor

Pros:

✅ No prescription required – Allows individuals without diabetes to easily access a CGM.
✅ Immediate access – No need to wait for insurance approval.
✅ Greater flexibility – You can choose the model that best fits your needs, without restrictions.

Cons:

❌ Higher cost – Without insurance, a CGM can range from $100 to $400 per sensor, making long-term use expensive.
❌ Lack of medical support – Unless working with a healthcare professional, you’ll need to interpret data on your own. Luckily, we have over 70 educational articles on every blood sugar topic imaginable that can help get you started.  We suggest starting with “How to Interpret CGM Data for Optimal Health and Athletic Performance” as well as “What Should Your Blood Sugar Levels Be?” You can also listen to these episodes on The GOOD IDEA Audio Blog (available on Spotify and Apple Podcasts) if you like to take your knowledge on the move.

3. Subscription Services & Wellness Programs

A growing number of wellness companies, such as Levels, Nutrisense, Tastermonial, and January AI, offer CGMs through membership-based services. These programs provide access to a CGM along with analytics, coaching, and insights tailored to optimizing metabolic health.

Pros:

✅ Additional insights & analytics – Many services include AI-driven reports, meal recommendations, and behavioral coaching.

✅ Easier access for non-diabetics – You do not need a diagnosis in order to obtain a CGM, simply fill out some pre-screening questions and purchase.

✅ Holistic approach – Some companies provide personalized recommendations on diet, exercise, and lifestyle based on glucose data.

Cons:

❌ Subscription costs – There is a very wide range in cost for these programs. Some may be covered in part by insurance (costing as low as $35 per month) but others can run as high as $450 per month.
❌ Limited CGM selection – Most programs offer specific models, so you may not have full control over which CGM you use.
❌ Wide Range of App Functionality – Some apps provide very basic information while others have the ability to input events (meals/exercise/notes), access educational materials, or even attempt to predict the glucose response to your next meal. See the breakdown of each subscription below for details.

Popular Subscription Services

•          Nutrisense provides a month of CGMs with each purchase. They have an app that allows you to input activities over and above the standard CGM app with a LOT of educational material in the app to get you started. While the subscription service is expensive, they do offer 1 on 1 calls with a nutritionist that is included for free with most insurances.
•          Levels launched their service around the same time as Nutrisense and while the app has a different layout and vibe, the functionalities are very similar. Levels also has a robust blog with in depth educational content.  
•          Tastermonial is arguably the least expensive service. With CGMs costing as little as $35 when covered in part by insurance. However, their service is newer to the market, making their app the most limited with very few blogs/educational resources. Tastermonial does provide a starter experiment kit to discover how you metabolize foods. They send you a box of test foods which you consume and measure your response with your CGM.
•          January AI functions on a different model. While a CGM is still involved to collect glucose data, artificial intelligence is implemented to predict future glucose responses and provide personalized insights even after the CGM expires. A virtual health coach that allows you to scan a photo on your food and it will show you the calories, macros, and estimated glucose impact before you eat the food. I’ve never used the service myself so I am unable to comment on the accuracy or convenience of this option but it certainly presents with an intriguing way to measure blood sugar.

How to Choose the Best Option for You

The best way to obtain a CGM depends on your health goals, budget, and access to insurance. Here’s a quick guide to help you decide:

• If you have diabetes and insurance coverage → A prescription-based CGM through your provider is likely the most cost-effective and medically supported option.
• If you’re an athlete, biohacker, or optimizing metabolic health and you are familiar with CGMs → A direct purchase likely offers the easiest access.
• If you are new to blood sugar management or want expert guidance and insights → Subscription-based programs provide additional analytics and coaching beyond raw glucose data.

Bringing It All Together

A CGM can be a valuable tool for improving energy, mood, and metabolic health. Whether you obtain one through insurance, direct purchase, or a subscription program, understanding the pros and cons of each option will help you make an informed decision. By choosing the right CGM and using it effectively, you can gain deeper insight into your health and take actionable steps toward better glucose stability and long-term well-being. Happy glucose tracking!

Author: Dr. Colleen Gulick, Ph.D. (ExPhys), MS (ExPhys), BS (BioE), EIT (ME), CSCS