Ketonix Breath Ketone Monitor


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Rated 4.25 out of 5 based on 8 customer ratings
(8 customer reviews)
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Product Description

Measuring your breath levels of ketones is one of the best ways to see if you’ve successfully gotten yourself into ketosis – a state of maximum fat-burning efficiency. Compared to blood testing, ketone breath testing is far less invasive and unpleasant, and compared to urine testing, it is far more accurate.

The Ketonix breath ketone monitor – a quality Swedish product – is a reusable breath ketone analyzer that allows you to easily measure your level of ketosis. It comes with a 30 day money-back guarantee and:

-Is esily powered by a computer with USB port or USB charger.
-Instantly measures your ketone production by painlessly analyzing your breath.
-Is a 100% reusable instrument that can be used thousands of times.

So what are the advantages of using a ketone breath monitor like this instead of using urine strips or blood ketone meters?

-Urine strips indicate the excess concentration of acetoacetate in your urine, so after you’ve been using a ketosis based diet for a couple weeks, urine measurements are no longer accurate or reliable. But breath ketone measurements indicates the acetone in your breath, which is produced from the breakdown of acetoacetate in your blood, and are highly accurate and reliable.

-Urine strips can only be used once. Ketonix is reusable and can be used over and over again.

-Urine strips tests need urine and somewhere to do the test. You can perform tests using Ketonix anytime, anyplace.

-Urine strips need to be disposed. Ketonix can simply be stored in the bag that is included with your monitor.

-Urine strips cost you every time you test, but ketonix is a one-time investment.

-Blood ketone monitors require strips, which can be highly expensive.

-Blood ketone measurements are difficult, often fail and can cost you twice!

-Blood ketone meter values highly vary between devices (even when it is the same model and brand).

When you get the Ketonix breath ketone monitoring device, you can also use the accompanying Ketonix app to calculate your ketogenic diet ratio and keep track of your ketosis efficiency! A breath ketone monitor is by far the ultimate combination of the easiest and most accurate way to measure how well you’re doing at burning fat, and the Ketonix breath ketone monitor is the best breath ketone monitor you’ll find.

8 reviews for Ketonix Breath Ketone Monitor

  1. Rated 5 out of 5

    John Ormond

    Hi everyone,

    I have been on a full ketogenic diet now for four months and using the ketonix breath analyser for about two months. My experience is very good. I have followed the rules of the eating approach as described by Volker and Phinney. ( <50g carbs and restrained protein). I have used the article on the ketonix web site on measuring breath acetone.

    It took maybe a month to build to the normal ketogenic diet range of 2 – 30. After this, I tried missing breakfast ( actually bullet proof coffee plus C8). This then pushed me up to the fasting range of about 20 – 110. So I would think possibly BHB 2- 5 mM. I tried the blood analyser which did not work very well for me.

    After hard exercise ( weights in the gym) the levels drop sharply and briefly presumably due to the generation of glucose by my body. Gentle jogging keeps me fat burning as per Maffetone.

    After a bad experience but good customer service I bought the practical and reliable Bluetooth version of ketonix. This is awesome. I use the battery for flexibility in taking the test. You have to follow the guidance in the manual on letting the meter clear moisture before unplugging, dont leave it on all the time and keep it boxed and clear of dust.

    The curve on the graph of BAc cycles up and down over the range.

    It is expensive but then the advantages of keto eating are so massive that I reckon it is the best investment you could ever make.

  2. Rated 4 out of 5

    Jim Purcell

    In response to Kathy’s post: A low carb diet is only one part of the equation. Equally important is a low to moderate protein diet (from this one can correctly infer that the diet is predominantly fat and fiber). If one has a low carb but high protein diet, the protein will be converted into sufficient glucose to interfere with ketone production (in addition to creating other, even more dangerous conditions).

  3. Rated 4 out of 5


    I have just got my ketonix breath analyser today. It has registered me in the green, several times. It says on the little brochure, I got with the analyser that this means I am in nutritional ketosis. Is there anything else I should be doing? I am not quite sure I am reading it thoroughly enough.

  4. Rated 5 out of 5


    Do you want extra mouthpieces? And why?

    • Ben Greenfield

      You want extra mouthpieces if you are a family of more than 2 using the Ketonix or if you are a clinic and you want the patients to test themselves when they visit. Otherwise you don’t need extra, the Ketonix comes with a spare mouthpiece.

  5. Rated 2 out of 5


    I’ve been using the ketonix for a few weeks, and following a very low carb diet (below 25g of carb). I can only get it to ocassionaly register above 3.5… into the green. Most often, I can’t even get it to register. Is it possible that I am using all the ketones that I’m producing? I do run alot and weight train. Is there a way to get my body to produce more ketones? I know I feel better when I am “in the green” on the ketonix, but I’m having a really hard time figuring out how to get there.

  6. Rated 4 out of 5


    I have this device and learning to use it. I usually am about 45-55 on the scale. When it drops to say 25 does that mean I’m out of ketosis?

    I only give it a 4 start rating as I would like to see more on the subject of using the actual results and how to interpret them.

  7. Rated 5 out of 5


    Got this great little device a few days ago. It does take a bit of playing around with and reading to fully understand how to use it correctly, but once you have mastered this you will be glad you did. My ketones have gone from 45 or so 2 days ago to 67 today so Im a very happy camper!. The great thing with this device is you can measure and track your results as many times as you like for just 1 up front payment.

  8. Rated 5 out of 5

    Rick Yount

    Disposable breath ketone monitors are expensive. Blood ketone monitors are painful (requires more blood than a glucose test), and test strips are expensive.

    The Ketonix is simple to use, though it takes time for the monitor to “initialize” before each test. Results are given in a different scale than blood ketone tests. I am still looking for a convenient conversion table or formula, but a measurement of “50” on the ketonix is roughly equivalent to a “1.0” for blood ketones. So my goal is to be above 45 for each measurement.

    If it continues to work as it has, I will remain a very happy camper. Still learning to use the software.

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