To compare the meters, we made a list of important features expected or desired from the best ketone meters, then we tried every meter separately.
This article reports on what we found. Use it so you can make an informed decision on which ketone meter to buy, then get measuring your ketones to ensure you’re maintaining a state of ketosis and see better results on keto.
How We Tested the Ketone Meters
Before making any evaluations, we tested each meter individually. We unpackaged it, set it up, and of course measured blood ketones with it while following a keto diet.
During the testing process, we observed and compared a number of things among the various blood ketone meters. Specifically, we asked:
- How much unpacking and setup is required for the measuring device?
- Are the instructions easy to follow?
- How many strips / attempts did it take to get a successful result?
- Does the meter integrate with your smartphone?
- Are the results logged automatically in a corresponding app?
- Does the meter also measure blood-glucose levels (blood sugar) and give glucose readings?
- And many others
About Testing for Accuracy
While we did test our blood ketones using each meter to see how it performed, it was impossible for us to confirm absolutely accurate results unless we had the same tests conducted at the same time by a professional lab. Thus, we focused on meters that have been put to the test by the pros and have the best reputations for accurate readings of ketone bodies.
Along the way, we found out that the FDA has approved only about half the meters we tested. (See Table 1). This is meaningful in that we have better confidence that a meter is testing in an accurate way if it’s FDA approved.
Along with testing performance, we evaluated (and tabulated) the special features of each meter to compare and contrast. (See Table 1). These features ranged from warranty length to size of memory to store past tests to the ability to act as a blood glucose testing meter (and consequently allow you to calculate glucose ketone index or GKI, the all-in-one biomarker for metabolic health and ketosis).
While evaluating features, we chose not to go into detail on those that are common and not distinctive. For instance, all the ketone testing kits contain batteries, lancet devices, and sterile lancets (to prick your fingers). They also possess the ability to generate and produce a blood ketone reading in 10 seconds or less.
Lastly, we looked at cost. A meter may seem affordable at first glance, but then you see the cost of replacement ketone test strips! If you plan to use your meter regularly, this is the cost to focus on.
Now then, onto the meters.