Short answer: If you are paying cash in the United States, an over-the-counter continuous glucose monitor (CGM) currently starts at about $54 for a two-week plan or $89 for a four-week plan, depending on the product. Prescription CGMs can cost more without insurance, but the final price depends on the device, pharmacy, coupons, and whether you qualify for a manufacturer savings program. Prices and eligibility can change, so verify the current terms before ordering.
This guide compares current cash-price information for Stelo, Lingo, FreeStyle Libre, and Dexcom G7. It also explains what insurance may cover, what CGM data can—and cannot—tell you, and when a clinician should be involved.
CGM cash prices at a glance
| CGM | Current cash-price example | Prescription or OTC? | Important note |
|---|---|---|---|
| Stelo | $99 one month; $89/month subscription; $252 for three months | OTC for adults 18+ not using insulin | Two sensors per month, up to 15 days each |
| Lingo | $54 for two weeks; $89 for four weeks; $249 for 12 weeks | OTC for adults 18+ not using insulin | Plan length and sensor count vary |
| FreeStyle Libre 3 Plus | Varies by pharmacy, prescription, and coverage | Prescription in the United States | Manufacturer assistance and insurance terms may reduce out-of-pocket cost |
| Dexcom G7 / G7 15 Day | Varies by pharmacy, prescription, and coverage | Prescription in the United States | Manufacturer savings programs may apply |
The OTC prices above are manufacturer-listed prices checked on September 2, 2026: Stelo pricing and Lingo plans. They are not a guarantee of the price you will see at checkout. Shipping, taxes, promotions, and plan changes can affect the total.
What does a CGM do?
A CGM uses a small sensor worn on the skin to estimate glucose in interstitial fluid and send readings to an app or receiver. It can show trends, overnight patterns, and responses to meals or exercise. A CGM reading is not the same as a laboratory blood-glucose measurement, and readings may lag behind blood glucose when glucose is changing quickly.
For people with diabetes, the American Diabetes Association’s 2026 Standards of Care, Section 7 emphasizes individualized diabetes-technology selection, appropriate training, and access to a blood-glucose meter when needed. Device choice should match the person’s treatment, safety needs, preferences, and ability to use the data.
OTC CGMs: Stelo and Lingo
Stelo
The FDA cleared Stelo as an over-the-counter CGM for adults 18 and older who are not using insulin. The FDA’s clearance states that it is not intended for people with problematic hypoglycemia. The manufacturer also advises users not to make medical decisions from the product without guidance from a healthcare professional. See the FDA announcement and the current price page.
Stelo is a reasonable product to consider when the goal is short-term learning about glucose patterns and the user fits the OTC indication. It should not be treated as a substitute for diabetes diagnosis, treatment, or urgent evaluation.
Lingo
Lingo is another consumer glucose sensor sold without a prescription for adults who are not using insulin. Its current product page lists a two-week plan at $54, a four-week plan at $89, and a 12-week plan at $249. Check the terms and safety information before purchase because intended use, age limits, and medical disclaimers matter.
Prescription CGMs: FreeStyle Libre and Dexcom
Prescription CGMs can be available through a pharmacy, a durable-medical-equipment supplier, or a health plan. The cash price is not one universal number: it may include the sensor, receiver or compatible phone, prescription processing, and follow-up supplies. Before paying, ask the pharmacy for the cash price and ask the manufacturer whether a savings program applies.
Abbott reports that many commercially insured users pay $0–$20 for sensors, but that statement does not establish the uninsured cash price. Abbott’s cost page explains current assistance terms and exclusions. Dexcom lists the G7 and G7 15 Day and provides savings information on its cost and coverage page. Actual eligibility and price depend on the prescription and payer.
Does insurance cover a CGM?
Coverage depends on the diagnosis, treatment, plan rules, device indication, and documentation. In general, OTC wellness products should not be assumed to be reimbursable simply because they measure glucose.
For Medicare, the official Medicare coverage page says Part B may cover a CGM and related supplies when eligibility requirements are met. These include diabetes, an order from a treating clinician, and either insulin use or a history of problematic hypoglycemia, along with required training and follow-up. After the Part B deductible, a person generally pays 20% of the Medicare-approved amount when the supplier accepts assignment. Confirm your personal eligibility with Medicare and the supplier.
Can a CGM help with weight loss?
A CGM can provide feedback about how meals, sleep, activity, and stress relate to glucose patterns. However, a sensor is not a stand-alone weight-loss treatment.
A 2026 systematic review and meta-analysis in the European Journal of Medical Research evaluated 23 studies involving 1,074 people without diabetes. The review found a modest improvement in mean glucose compared with control groups, but no statistically significant difference in BMI. Benefits appeared to depend on context, with more signal in people with prediabetes than in people with normal glucose levels. The authors concluded that CGM is more appropriately viewed as biofeedback within a structured lifestyle program, not as an independent way to achieve weight goals. Read the PubMed abstract for the methods and limitations.
How to lower your out-of-pocket cost
- Compare the manufacturer’s current price with the pharmacy cash price.
- Ask whether a savings card applies to your insurance status and diagnosis.
- Check whether you need a prescription, receiver, or compatible smartphone.
- Calculate the cost for the full intended period, including shipping and replacement sensors.
- Do not choose a product solely because it is cheaper if it is not indicated for your medical situation.
- If you have diabetes, use insulin, or have symptoms of low blood sugar, speak with a clinician before choosing an OTC product.
Bottom line
For a short, self-pay experiment, current OTC examples range from $54 for two weeks to $99 for one month, while prescription CGM costs vary widely by pharmacy, coverage, and savings eligibility. The best choice is not simply the lowest sticker price: it is the device that is legally indicated, medically appropriate, affordable over the full period, and supported by a plan for interpreting the data safely.
Medical note: This article is for general education and price comparison. It does not diagnose or treat diabetes, hypoglycemia, or any other condition. Do not change medication or insulin based on CGM readings without advice from a qualified healthcare professional. Seek urgent care for severe symptoms such as confusion, fainting, seizure, or difficulty breathing.
Sources
- American Diabetes Association, Standards of Care in Diabetes—2026, Section 7: Diabetes Technology
- Liao et al., 2026 systematic review and meta-analysis, European Journal of Medical Research
- U.S. FDA, Stelo OTC CGM clearance
- Medicare, Continuous glucose monitors
- Stelo current pricing
- Lingo current plans
- FreeStyle Libre cost and coverage information
- Dexcom cost and coverage information