feb 07, 2026

What Is A Normal Ketone Range For Nutritional Ketosis?

What Is A Normal Ketone Range In Blood For Nutritional Ketosis?

For people following a ketogenic diet, a normal ketone range for nutritional ketosis is 0.5–5.0 mmol/L.

The range is mainly divided into three categories, each representing a different meaning:

Ketone levels around 0.5-1.5 mmol/L: Indicates a mild state of ketosis. Ketone levels in this range are prone to fluctuations and it's easy to exit ketosis.
Ketone levels between 1.5-3.0 mmol/L: Indicates a stable state of nutritional ketosis. Energy levels are stable, suitable for maintaining a daily ketogenic diet, and this is the ideal ketone concentration range.
Ketone levels between 3.0-5.0 mmol/L: Indicates a deep state of ketosis, which requires strict adherence to rules, is difficult to maintain, and is not suitable for a daily ketogenic diet.

Maintaining a ketone range between 1.5-3.0 mmol/L for an extended period means that the body has fully switched to using fat and ketones as its primary energy source.

If you would like to learn more about ketosis, please feel free to visit SIBIO.

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Recommended: SiBio CKM Sensor

With 24/7 continuous ketone monitoring, SiBio CKM makes your journey into ketosis no longer invisible — it’s mapped, measured, and yours to control.

A SiBio ketone sensor with smartphone app showing ketone level 2.4 mmol/L. Features include 14-day usage, app

Disclaimers

The shown pictures and images are for illustration purpose only, and may differ in appearance from the actual product.

The SiBio KS3 system is indicated for continuously monitoring interstitial fluid ketone levels in people aged 18 years and older.

The SiBio KS3 system is NOT intended for use in the diagnosis, treatment or monitoring of disease.

The SiBio KS3 system sensor has a small, flexible tip that is inserted just under the skin.

◇The SiBio KS3 system uses an electrochemical sensor to monitor ketone levels in real time.

♮If you have a medical appointment that includes strong magnetic or electromagnetic radiation, for example an X-ray, MRI or CT scan, remove the SiBio KS3 system sensor that you are wearing and apply a new one after the appointment.

§ The SiBio KS3 system sensor has been tested to withstand immersion into 1 meter (3 feet) of water for up to 1 hour.

∷The SiBio CKM app is only compatible with certain mobile devices and operating systems. Please check our compatibility guide for more information about device compatibility before using the app.

☍Turn on the Bluetooth on your phone so that the phone/App can pair and communicate with the SiBio KS3 system sensor.

※Keep the SiBio KS3 system sensor and display device within 10 meters (32.8 feet) with no obstacles (like walls or metal) between them. Otherwise, they might not be able to communicate.

¶Some individuals may be sensitive to the adhesive that keeps the SiBio KS3 system sensor attached to the skin.

†The ketone readings begin after the 1-hour sensor warmup has passed.

For Important SafetyInformation please read the instruction KS3 CKM System User Guide.

What Is A Normal Ketone Range For Nutritional Ketosis?