Continuous Glucose Monitor
Two weeks of real glucose data, read by a clinician alongside your labs — and an honest answer about whether you need it at all.
- A full pattern rather than one fasting number — meals, nights and day-to-day variability
- A licensed clinician reading the data against your labs, medications and history
- An eligibility screen before you wear one, and a written interpretation with a decision attached
A CGM does not diagnose diabetes or prediabetes. If your labs are normal and you have no symptoms, your clinician may tell you a wear is unlikely to change anything — and that is a legitimate answer.
Indicative price · confirmed after eligibility · prescription treatment
What a continuous glucose monitor actually is
A continuous glucose monitor is a small sensor worn on the back of the upper arm. A filament sits just under the skin and samples the fluid between your cells, and the sensor estimates your glucose from it every few minutes for the life of the wear. The readings go to your phone. There is no finger stick, and there is nothing to remember to do.
What you get at the end is not a number. It is a shape: how high you go after you eat, how long you stay there, how far you drop overnight, and how much all of that moves around from day to day. A single fasting glucose draw is one photograph. A CGM is the film.
That is the whole appeal, and it is also where most of the industry stops being honest. A pattern is only useful if someone can tell you what to do differently because of it. On its own, a graph of your own blood sugar is an interesting object. Read against your labs, your medications, your hormone status and what you are actually trying to change, it can be the thing that finally makes a plan specific.
How it works here
Every plan follows one path. Each step feeds the next. See the Lab Testing approach.
- 01
Measure
We baseline your labs, history, and goals.
- 02
Plan
A clinician decides whether this fits — and what else might serve you.
- 03
Act
If appropriate, you start with clear guidance and high-touch support.
- 04
Track
We monitor how you respond on a defined cadence.
- 05
Adjust
Protocols are refined over time. Guided care, not a kit in the mail.
Why glucose is worth looking at after 45
Metabolic drift in midlife is not a character flaw. It is the ordinary arithmetic of losing muscle, sleeping worse, moving less and — for many people — changing hormonal environment.
The scale of it is easy to underestimate. The CDC's most recent national estimates put 115.2 million U.S. adults in the prediabetes range, including 31.3 million people aged 65 and older — 52.1% of that age group. Prediabetes is, by design, the stage that produces no symptoms. Most people carrying it are not aware of it.
Age also changes the shape of the curve, not just the average. A March 2026 analysis in Nature Communications looked at CGM data from 3,634 adults who did not have diabetes or prediabetes, and found that older participants had measurably greater glycemic variability and lower time in a tight range than younger ones — with sex, sleep duration, and carbohydrate and protein intake all showing independent associations. Notably, the same analysis found that the measured factors explained only a modest share of the variation between people. Glucose patterns are real, they shift with age, and they are not fully explained by anything we can put on a questionnaire.
For women, the perimenopausal transition adds its own layer — changes in body composition, sleep and insulin sensitivity that often arrive before anything shows up on an annual fasting glucose. For men, declining testosterone tracks with the same visceral fat and insulin-sensitivity story. In both cases the standard once-a-year blood draw is a poor instrument for catching a moving target.
What the evidence actually says
This is the section most CGM pages leave out, so we will be direct.
In people who already have a glucose problem, CGM has real support. A systematic review and meta-analysis published in the European Journal of Medical Research in January 2026 pooled 23 studies covering 1,074 participants without diabetes and found a significant improvement in mean glucose (SMD −0.54). But the finding underneath the headline is the one that matters: the benefit appeared in people with prediabetes, and no appreciable glycemic benefit was observed in healthy, normoglycemic participants. The same analysis found no significant change in BMI. The authors' own framing is that a CGM works as "a precision biofeedback tool integrated within structured lifestyle programs" — not as a weight-loss intervention on its own.
In metabolically healthy people, the honest answer is that we do not know. A 2026 narrative review in JAMA Internal Medicine examined CGM use beyond diabetes and concluded there is no scientific evidence that continuous glucose monitoring improves health or prevents disease in people without diabetes. The authors went further and named a specific risk: normal glucose fluctuations being over-interpreted, leading to unnecessary dietary restriction or anxiety. That is a real harm, and it is more likely when a device arrives in the mail with an app and no clinician attached.
The professional guidelines have not moved ahead of the data. The American Diabetes Association's Standards of Care in Diabetes—2026 recommends CGM for people with diabetes on insulin or on therapies that can cause hypoglycemia. It acknowledges that over-the-counter monitors are now available to anyone, including people without diabetes or with prediabetes who want to assess their glycemic responses — but it does not recommend the practice as standard care, because the outcome evidence is not there yet.
So here is our position. A CGM is a strong tool for a specific person: an adult in or near the prediabetes range, or someone on a metabolic or weight program where the data will change a decision. It is a weak tool for a metabolically healthy person looking for something to optimize. We would rather tell you that before you wear one than after.
Who this is likely to help — and who it probably isn't
Situation by situation, this is where a wear usually earns its place — and where it usually does not.
What we look at, and what we deliberately don't
When your wear is finished, your clinician reads the pattern with your labs open next to it. In practice, four things carry most of the signal.
Where you spend your time. How much of the day sits in a steady band versus swinging. Time-in-range is a well-established metric in diabetes care; the standard 70–180 mg/dL band was validated for people being treated for diabetes and does not transfer cleanly to someone without it, which is why we read your range against you rather than against a target designed for a different population.
How far you travel after meals, and how fast you come back. The height of the peak matters less than how long the elevation lasts and whether it settles. Two people can hit the same number and have very different curves.
Overnight and early morning. The fasting reading your annual draw captures is one point on an eight-hour line. Seeing the whole line sometimes explains a "normal" fasting glucose that never felt normal.
Day-to-day variability. How much the same breakfast produces a different result on a bad night's sleep, a travel week, or a stressful stretch. This is often the most actionable finding and the one a single blood draw can never show.
What we do not do is hand you a target to chase. We do not set glucose goals for people without diabetes, we do not tell you to eliminate foods based on a single spike, and we do not treat the app's color coding as clinical guidance. A CGM that makes you afraid of an apple has made your health worse, not better.
Alongside a weight or metabolic program
If you are on or considering a GLP-1, a CGM answers questions the scale cannot. Weight is a slow, noisy signal that moves for a dozen reasons. Glucose response moves earlier. Seeing both lets your clinician tell whether the metabolic side of the program is doing what it should, and whether symptoms you are attributing to the medication are actually glucose-related — which, more often than people expect, they are not.
It also does something quieter and more useful: it tells you which of your ordinary meals your body handles well. Most people finish a wear with two or three durable changes rather than a new set of rules, and durable is the entire point.
Alongside hormone therapy
Glucose handling and hormonal status are not separate systems. Where someone is being worked up for perimenopausal symptoms, or is early in testosterone therapy, glucose patterns are part of the picture — not because a CGM diagnoses anything hormonal, but because reading the two together sometimes explains a symptom that neither explains alone. This only works if both are on the table at the same time, which is the argument for measuring before treating rather than after.
What a CGM cannot do
It cannot diagnose diabetes or prediabetes. Those diagnoses are made from A1c, fasting plasma glucose or an oral glucose tolerance test, and a CGM does not replace any of them. If your pattern suggests a problem, the next step is a confirmatory blood test, not a longer wear.
It cannot tell you whether a food is good or bad. It shows how your body handled that food, that day, in that context.
It cannot substitute for a relationship with a clinician who knows your history. That is the part we are actually providing.
How the wear works
The sensor ships to you with instructions on wear and what to log. Application is a quick press on the back of the upper arm; most people describe it as a pinch or nothing at all. It is worn continuously and is designed for showering and exercise, following the manufacturer's instructions that come with your sensor. You wear it for the full period while living normally — the useful data is your ordinary week, not a careful one. When the wear is finished, your clinician reads the pattern with your labs open next to it and writes it up, and you decide together what changes.
Is it right for you?
Adults whose A1c or fasting glucose sits in the prediabetes range, people on or starting a GLP-1 program, and people whose annual labs keep drifting year over year. It is a weak tool for a metabolically healthy person looking for something to optimize, and we would rather tell you that before you wear one than after. We do not prescribe a CGM to anyone with a history of disordered eating or food restriction. See medical weight loss and lab testing for how a wear is read against the rest of your plan.
Prescription CGM through a clinician vs. buying one over the counter
Over-the-counter continuous glucose monitors have been available in the U.S. since 2024, and they are legitimate products. If what you want is the raw sensor, buying one directly is a reasonable thing to do, and we would rather say that than pretend otherwise.
The difference we are selling is not the hardware. It is interpretation, and a clinician who is willing to tell you the wear was uninformative.
Where this fits in your plan
If you have not had recent bloodwork, start with the Comprehensive Lab Panel — a CGM read without labs is a graph without a subject. If your panel comes back in the prediabetes range, this is the natural next step, and it is often paired with Metformin or a weight management program depending on what the numbers show. If your questions are more about energy, sleep and body composition than glucose specifically, a hormone workup may be the better first move.
You can see what everything costs on our pricing page, and where we are licensed on states we serve.
Often considered alongside
Comprehensive Lab Panel
A comprehensive blood panel establishing your baseline across key health markers.
View treatmentMetformin
A long-established oral medication that supports insulin sensitivity and metabolic health.
View treatmentProducts marked Compounded are prepared by a licensed compounding pharmacy under a prescription written for you. Compounded medications are not FDA-approved and are not equivalent to or interchangeable with any branded product.
What the evidence actually says
A CGM cannot diagnose diabetes or prediabetes — those diagnoses are made from A1c, fasting plasma glucose or an oral glucose tolerance test, and a wear does not replace any of them. The evidence for benefit in people without diabetes sits with those in the prediabetes range; a 2026 narrative review in JAMA Internal Medicine concluded there is no scientific evidence that continuous glucose monitoring improves health or prevents disease in people without diabetes, and named a specific risk: normal glucose fluctuations being over-interpreted, leading to unnecessary dietary restriction or anxiety. The American Diabetes Association's Standards of Care in Diabetes—2026 recommends CGM for people with diabetes on insulin or on therapies that can cause hypoglycemia, and does not recommend it as standard care for anyone else. So we will tell you before a wear, rather than after, whether the data is likely to change a decision.
References
Government and professional-society sources consulted for this page.
- Hemoglobin A1C (HbA1c) Test — MedlinePlus (U.S. National Library of Medicine)
- Insulin Resistance & Prediabetes — National Institute of Diabetes and Digestive and Kidney Diseases
Frequently asked questions
No. Monitors are available to people without diabetes, and we prescribe them within metabolic and weight programs. But the honest framing matters: the strongest evidence for benefit in people without diabetes is in those in the prediabetes range. If your labs are clean and you have no symptoms, your clinician may tell you a wear is unlikely to change anything — and that is a legitimate answer, not a failed consult.
No. Prediabetes and diabetes are diagnosed from A1c, fasting plasma glucose or an oral glucose tolerance test. A CGM can show a pattern that prompts one of those tests, but it does not replace them and we will not diagnose from it.
The sensor is comparable. What you are getting here is a clinician reading your data against your labs, your medications and your history, an eligibility screen before you wear one, and a written interpretation at the end with an actual decision attached. If you would rather have the device without the interpretation, an over-the-counter monitor is a reasonable choice and we will say so.
Application is a quick press on the back of the upper arm; most people describe it as a pinch or nothing at all. The sensor is worn continuously and is designed for showering and exercise. Follow the manufacturer's instructions that ship with your sensor.
Long enough to capture an ordinary stretch of your life, including at least one weekend and, ideally, a normal amount of poor sleep and stress. A carefully behaved week produces a flattering graph and a useless one.
Tell us, and we will stop. This is a documented risk of glucose monitoring in people without diabetes, not a personal failing, and it is one of the reasons we screen before prescribing rather than after. We do not prescribe CGMs to anyone with a history of disordered eating or food restriction.
That is not how we use it. A single spike after a single meal on a single day is not evidence about a food. What a wear reliably shows is patterns — the times of day, the sleep and stress conditions, and the combinations that consistently behave differently for you. Most people leave with two or three changes, not a list of banned foods.
Often, yes. It shows whether the metabolic response is tracking with the weight change, and it helps sort out whether symptoms you are attributing to the medication are actually glucose-related. Your clinician will tell you whether the timing makes sense for where you are in the program.
ACT 2 Health is a self-pay service. Current pricing is on our pricing page.
See if Continuous Glucose Monitor fits your plan
The right plan begins with knowing where you are. Start with a short eligibility check and a baseline — and we'll tell you, honestly, what fits.
We measure first. Then we act.
ACT 2 Health provides clinician-led care. Treatments described are available only to eligible patients following clinical evaluation and within applicable regulations. This page is educational and is not medical advice. Individual results vary.