When following a ketogenic way of eating the goal is to be in ketosis to burn that fat. One of the biggest questions people starting out have is when do they know they are in ketosis.
There are a few ways to check your ketones but they all have their drawbacks in our opinion. We purchased the House of Keto Monitor as we wanted to see if it was accurate or too good to be true based on the price. Check out our findings based on a comparison with blood ketone readings.
Testing your ketones – Options
Here are some of the options currently available to test your ketones –
Urine Test Strips are the least preferred testing method as they are the least accurate. They are known to show readings when you first enter ketosis but the longer you are in ketosis, the less ketones you will have in your urine. They are a cheaper option though so may be a good thing to use at the start to know you are producing ketones.
Breath Ketone Analyser is another way of testing your ketones, this time measuring the acetone in your breath. The benefit of measuring your breath is that it is less invasive than the blood measurement and it can be more cost effective as you only spend the one-off fee to buy the device. Some of the devices available are expensive though. Accuracy is better than the urine strips but not as accurate as the blood ketone measurement.
Blood Ketone Monitoring is the most accurate way to monitor your ketone levels. We use the Freestyle Optium blood glucose monitoring system and the freestyle blood ketone strips. It does require you to pierce the skin on your finger and get some blood. The ketone strips are also very expensive.
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We purchased the House of Keto Monitor for $29.95, which seemed very cheap compared to other ketone breath analysers available. Please note the shipping to Australia did take 4 weeks.
- 1 x House of Keto Monitor
- 4 x Tips – each tip should last for several months (hundreds of uses). These are therefore hygiene only and there’s no need to replace them frequently.
Here is some more instruction on how to use it correctly:
- For most accurate results take a measurement at fasted state in the morning.
- Do not consume alcohol for at least 10 hours before taking measurements.
- Don’t be dehydrated.
- Measure the last few seconds of your exhaled breath, the first few seconds are mostly room air.
Dan’s Test Results
Over about a week we tested our our ketones using a Freestyle Optium blood glucose monitor and using the House of Keto Monitor to determine the accuracy. See the results below.
|Date||Who||Blood Reading||Breath Reading|
|3rd March||Dan||1.7||Y 0.02|
|4th March||Dan||0.3||N 0.00|
|5th March AM||Dan||0.4||N 0.00|
|5th March PM||Dan||0.8||Y 0.02|
|6th March||Dan||0.2||N 0.00|
|7th March||Dan||0.9||Y 0.02|
|8th March||Dan||0.6||N 0.00|
|9th March||Dan||0.7||Y 0.02|
|15th March||Dan||0.3||Y 0.02|
|16th March||Dan||0.9||Y 0.02|
|17th March||Dan||0.8||Y 0.02|
|19th March||Dan||0.4||Y 0.03|
|20th March AM||Dan||1.9||Y 0.03|
|20th March PM||Dan||1.1||Y 0.03|
|21st March AM||Dan||0.9||Y 0.04|
|21st March PM||Dan||1.1||Y 0.03|
|22nd March AM||Dan||1.1||Y 0.03|
|22nd March PM||Dan||1.1||Y 0.03|
|23rd March||Dan||1.4||Y 0.04|
|24th March||Dan||.5||Y 0.02|
As you can see with the comparison of the breath and blood, the breath monitor has it’s flaws with accuracy. If my blood ketones measured above 0.6mmol I always received a Y from the breath ketones. Anything below that I might get a Y from the breath monitor or a N.
Therefore, the house of keto breath monitor is more accurate when you are in a higher state of ketosis. The number that is displayed after the Y seems to be irrelevant.
Our final takeaway from this little experiment is that the house of keto is a cheap, quick and non invasive way to confirm you are in ketosis, but it doesn’t really give you a true indication of how deep in ketosis you may be.
Are you using the house of keto breath monitor? How have you found the measurements? Let us know your thoughts in the comments.
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