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1. Connection issues KETONIX® Bluetooth®

It is a Bluetooth® Smart device, you don't need to pair it before using the app.
Currently the software support is for smartphones/tablets using iOS, Android and Mac's. Windows version is on the way

Here are videos of how to connect and use with a smartphone:


2. Connection issues USB (KETONIX® Red/Blue and KETONIX® USB)
  • Make sure you only run one instance of the KETONIX® software.
  • Check if the cable is broken: connect a USB memory to the cable, then massage the cable and see if your USB gets disconnected.
  • Try another USB port
  • Try another computer 
3. No reading when measuring
  • Make sure you only run one instance of the KETONIX® software.
  • Make sure the software says the device is connected.
  • Check the sensor by using a drop or nail-polish remover (acetone) or a drop of wine on a cloth, hold the cloth to the mouthpiece ... you should get a reading.
  • Make sure your technique is ok: breathe as normal through your nose, then before inhaling - exhale as long as you possible can into the mouthpiece.
    Never take a deep breath before exhaling into the KETONIX® device, then you will measure the air around you.
4. Low readings even when fasting
  • Make sure your technique is ok: breathe as normal through your nose, then before inhaling - exhale as long as you possible can into the mouthpiece.
  • It can take some days to see an increase in breath ketones depending on how large your glycogen stores are and your liver status, it is personal.
    A measure after a 24 hrs water fast will for most people be a baseline for their breath acetone in nutritional ketosis.

Low readings in the morning after a night fasting

  • It is normal to have the days lowest readings in the morning, your circadian rhythm produce cortisol and a rise in glucose to wake you up. 
  • To increase your ketone values in the morning, exercising in the evening and avoiding alcohol is a good tip.
5. Low readings after exercising

Depending on the type of exercise, intensity and length the body can respond differently. Some exercises generates cortisol and glucose increase, some only taps into fat-burning. The effect of training is interesting to monitor, so measure before and then many times  with  30 minutes interval after the training to see how it affects you.

Some exercise will cause glucose increase right after exercise and you will see a initial low reading and a higher post-exercise value. Other exercises will have no change initially and higher values post-exercise ... etc etc. How your body reacts depends on how your metabolism works, it varies from person to person.

6. Breath ketones not correlating with blood measures
  • Not always, in some special contexts it does. Breath ketones is acetone, blood ketones is beta-hydroxybutyrate. Two different substances in two different medium. Two different uses in the body: acetone is waste product from metabolising free fatty acids into acetoacetate, beta-hydroxybutyrate is formed from excess acetoacetate and buffered in blood. Breath acetone does not come from beta-hydroxybutyrate. 

    There is no way of calculating blood mmol/l from breath PPM. It is two different substances, one is continously leaving the body and the other is buffered or used as energy.

  • KETONIX® indicates the breath acetone, not blood beta-hydroxybutyrate. Breath acetone comes from AcetoAcetate which is formed when breaking down fatty acids for energy. Blood beta-hydroxybotyrate concentration is the current buffer of not used AcetoAcetate. 

    If you need to know how much your stores of unused beta-hydroxybutyrate you have then you should use a blood ketone meter.

    If you want to know your current break down of fatty acids for energy, breath ketones are a good indicator. If your breath acetone is low it means your body gets energy from glucose. Exogenous ketones is energy for your body and in most cases lower your bodys need to use fat as fuel with a result of low breath ketones.


and finally ... your body is unique. How it works is likely to be different from others. Starting out a ketogenic lifestyle involves several phases in which the body adopts to. Some phases takes weeks/months before changes are noticeable, some are faster. This is highly dependent on your body status.