Dr. Benjamin H. Krasne, M.D.
Board-certified physicianBoard-certified in anesthesiology, he reads medications and metabolism with a pharmacologist's eye, which shapes how he doses weight loss and longevity care.
Libre CGM sensors, prescribed online
CGM prescription online for FreeStyle Libre sensors
A licensed clinician reviews your health history and, if a continuous glucose monitor is appropriate, prescribes a package of Libre sensors. Each sensor is worn for 14 to 15 days, depending on the model, and sends readings to your phone.
- Free 5–10 minute consultation
- Each sensor lasts 14–15 days
- Monthly plan from $149, cancel anytime
Free to book. You pay only if you go ahead with treatment.
$149starting price, per month
Licensed U.S. clinician review
Wear: 14–15 days per sensor
From $149/motransparent price
5–10 minphone or video
No insuranceneeded
LicensedU.S. clinicians
Why get a CGM prescription through My IV Doctors
Fast, free consultation
Book a free 5–10 minute phone or video visit. A licensed U.S. clinician reviews your history and prescribes Libre sensors if a CGM is appropriate.
Glucose readings on your phone
Each FreeStyle Libre sensor sends readings to your phone, so you can see how meals and activity affect your glucose through the day.
Pick the supply you need
Start with a month of sensors and keep going only as long as the data is useful to you.
Help reading the data
You get guidance on applying the sensor and using the app, plus help interpreting your glucose patterns so the numbers lead to practical changes.
How to get a CGM prescription online
- 1
Pick a time for your free visit
Choose phone or video. In about 5–10 minutes, a licensed clinician reviews your history, medicines and goals.
- 2
Start your monthly supply
If a CGM is appropriate, your clinician sends the prescription and a month of Libre sensors ships to you. Keep going month to month, or stop when you have the data you need.
- 3
Apply your first sensor
Clean the skin on the back of your upper arm, use the applicator, and pair the sensor with the Libre app on your phone.
- 4
Replace the sensor every 14–15 days
Each sensor lasts 14 to 15 days, depending on the model. When it ends, remove it and apply the next one on a different spot.
- 5
Review your glucose data
Share your reports with a clinician to talk through patterns and practical changes, or bring them to your own doctor.
Who a CGM prescription is for
Type 2 diabetes or prediabetes
Seeing your glucose around the clock can show which meals and habits push it up, which helps you and your doctor fine-tune your plan.
Taking a GLP-1 medication
If you use a GLP-1 medicine, a CGM can show how eating changes affect your glucose as your appetite shifts.
A high A1C you want to understand
A few weeks of data can reveal patterns behind an elevated result, such as post-meal spikes.
Healthy adults curious about glucose
Some people without diabetes wear a CGM for a short time to learn how their body handles different foods, if a clinician agrees it's reasonable.
Type 1 diabetes or an insulin pump
People with type 1 diabetes, those using insulin pumps and anyone with frequent severe lows should manage their CGM with their diabetes care team, who can integrate it with insulin dosing.
Monthly CGM plan or buying sensors on your own
| Feature | Our monthly Libre plan | Sensors through your own doctor |
|---|---|---|
| Price | From $149/mo, self-pay | Depends on insurance and pharmacy |
| Prescription | Written after a free online visit | Needs an appointment with your doctor |
| Help reading the data | A clinician reviews patterns with you | Depends on your doctor |
| Commitment | Month to month, cancel anytime | Varies |
What is a CGM prescription?
This service is for people who already know they want to try a continuous glucose monitor and need a prescription to get one. You book a short consult, a licensed U.S. clinician checks that a CGM is suitable for you, and if it is, a package of FreeStyle Libre sensors is prescribed.
A Libre sensor is a small disc worn on the back of the upper arm. A thin, flexible filament sits just under the skin and measures glucose in the fluid between cells. Readings appear in the Libre app on your phone, so you can see how your glucose responds to meals, activity and sleep without routine fingersticks.
Prescription Libre sensors are FDA-cleared for people with diabetes. Some people without diabetes also use them to learn about their glucose patterns, and whether that makes sense is a decision your clinician makes with you. A prescription is only written when the clinician decides a CGM is appropriate.
How the monthly CGM plan works
The plan starts at $149 a month and covers a month of continuous wear. Every sensor is the same type, worn for 14 to 15 days depending on the model, so a month's supply keeps your readings unbroken.
Most people try one or two months to learn how meals, sleep and exercise move their numbers, then decide whether to keep tracking. You can cancel before your next refill date at no charge.
- One month: enough to spot your biggest after-meal spikes.
- Two to three months: time to make changes and see whether they hold.
- Longer: ongoing tracking alongside treatment such as metformin or a GLP-1.
How accurate CGM readings are
Readings come from fluid under the skin rather than blood, so they trail fingerstick results by several minutes, especially when glucose is rising or falling quickly. If a reading doesn't match how you feel, check with a fingerstick meter before acting on it.
Pressure on the sensor, such as sleeping on that arm, can cause false lows overnight. The first day of a new sensor can also be less steady. Look at patterns over several days rather than reacting to one number.
Showering, swimming and exercising with a CGM
You can shower, swim and exercise while wearing a Libre sensor, within the depth and time limits in the device instructions. If the edges lift, an overpatch can help it stay on for its full wear time. Rotating sites each time gives your skin a break.
CGM side effects and safety
CGMs are minimally invasive, but they're medical devices with specific instructions. Read the device guide and ask your clinician if anything is unclear.
- Skin irritation, itching or redness under the adhesive is the most common problem; rotate sites and tell your clinician if it persists.
- Remove the sensor before MRI, CT scans or high-frequency electrical heat treatment, as directed in the device instructions.
- High doses of vitamin C can falsely raise readings on some sensors; tell your clinician about supplements you take.
- Confirm with a fingerstick if readings don't match your symptoms, and seek urgent care for severe low or high blood sugar.
- A CGM is not a diagnostic test for diabetes; a high reading should be followed up with standard lab tests.
Physicians who oversee your care
Independently licensed U.S. physicians supervise every treatment we offer.
Dr. Johnathan Chance Miller, M.D.
PhysicianTrained at Columbia and Washington University, he pairs prescriptions with practical habits around food, training and sleep.
Dr. Vanessa Niles, R.N., M.D., F.A.C.O.G.
OB-GYN, board certifiedAn OB-GYN for more than 40 years and a Fellow of ACOG, she leads women's health care, from perimenopause to PCOS.
CGM prescription FAQs
Still deciding? The first consultation is free and takes about 5–10 minutes.
Book a free consultationCan I get a CGM prescribed online?
Book a free 5–10 minute phone or video consult. A licensed clinician reviews your history and, if a CGM is appropriate, prescribes FreeStyle Libre sensors on a monthly plan.
How much does a CGM prescription cost?
The plan starts at $149 a month for a month of Libre sensors. The first consultation is free, no insurance is needed and you can stop at any time.
How long does a FreeStyle Libre sensor last?
Libre sensors last 14 to 15 days, depending on the model. For example, FreeStyle Libre 3 sensors are worn for 14 days and FreeStyle Libre 3 Plus sensors for 15 days. Two sensors cover about a month of continuous wear.
Can I get a CGM without diabetes?
Not always. Prescription Libre sensors are cleared for people with diabetes, but a clinician may prescribe one to someone without diabetes when it's reasonable. Your clinician decides based on your situation.
Does putting on a CGM sensor hurt?
Most people feel little or nothing. The applicator places a thin, flexible filament just under the skin in a second.
Where do you wear a FreeStyle Libre sensor?
FreeStyle Libre sensors are worn on the back of the upper arm. Use a different spot each time you apply a new one.
Can you shower or swim with a CGM?
Yes, within the water limits listed in the device instructions. Dry the area gently afterward and consider an overpatch if the edges lift.
How accurate is a CGM?
CGMs are accurate enough for everyday tracking, but readings trail blood glucose by several minutes. If a reading doesn't match how you feel, confirm with a fingerstick meter.
Does insurance cover a CGM?
Our CGM plan is self-pay. Some insurance plans cover CGMs for people with diabetes when ordered through your regular doctor, so it may be worth checking your plan.
Can I use a CGM while taking a GLP-1?
Yes, many people do. The data can show how changes in eating affect your glucose. Talk with your clinician if you see frequent lows, especially if you also take other diabetes medicines.
What should I do if my CGM readings are high?
Repeated high readings deserve follow-up. Your clinician may recommend an A1C or fasting glucose test and, if needed, care with your primary doctor.
Do I need to remove my CGM for an MRI or CT scan?
Yes. Device instructions say to remove it before MRI, CT scans and high-frequency electrical heat treatment. Bring a spare sensor if you have one.
How is a CGM prescription different from your CGM program?
This page is the direct route to a prescription and a monthly sensor plan. Our continuous glucose monitoring page explains how CGMs work, who benefits and how to read the data in more depth.
Get your CGM prescription with a free consultation
Your first 5–10 minute phone or video consultation is free. If a CGM suits you, the monthly Libre plan starts at $149 a month and you can stop anytime.
Related services
References
- NIDDK (NIH): Continuous Glucose Monitoring
- MedlinePlus: Hemoglobin A1C (HbA1C) Test
- CDC: 1 in 3 Americans Have Prediabetes
Medically reviewed October 2026. This page is general information and not a substitute for advice from your own clinician. Read our editorial policy.
$149starting price, per month
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