You have your LEVL device, now how do you interpret the results? While the goal for elevated fat metabolism is 2PPM, acetone concentrations in healthy individuals can range from roughly 1PPM to 100PPM. Below we break down the results into increments so you can better understand your state of ketosis.

0 - 1.9ppm

While the human body is always burning a little bit of fat, you are primarily burning carbs and sugars in this zone.

2.0 - 7.9ppm

Your body has entered an elevated state of fat metabolism. Based on the scientific literature, 2.0ppm achieved with calorie restriction equates to ½ lb of body fat burned per week (if this level is maintained throughout the week).


While there is not a one-to-one correlation to blood ketones, 8.0ppm is the approximate equivalent of 0.5mmol of beta-hydroxybuterate also known as the beginning states of nutritional ketosis.

For measurements above 10.0ppm, the KCAL/DAY and FAT LBS/DAY will not calculate in the LEVL app. These higher levels are not achieved by calorie restriction alone. Individuals are eating a low carbohydrate diet, consuming ketogenic supplements (e.g., ketone esters or MCT), and/or fasting. Thus, calculating fat loss is difficult because calorie restriction (without fasting) is not the primary driver of breath acetone.*

Higher numbers are not always better.

Experiment with your nutrition, exercise and sleep duration to learn where you feel best. 

*For measurements above 10.0ppm, the rate of fat loss is unknown per the scientific literature. People who have measurements above 10.0ppm are typically on a low carb, high fat diet, so they are burning a mixture of stored body fat and nutritional fat therefore the calculation will no longer be relevant.