Test Breath Ketones without a Ketonix (using a cheap breathalyzer)

ketonix
acetone
breath
(Vincent Hall) #609

I had similar thoughts this morning when I blew a hi reading. Did another test and returned my usual 0.4 for post 14 hr fast blow.
No officer, I’ve not consumed any alcohol for over 8 months…?
\v/

(danjo171) #610

High end breathalysers don’t measure acetone, only the cheap ones do. I get tested regularly at work with no problem.

(Vincent Hall) #611

Thanks for the info Danjo
\v/

(Madge Boldt) #612

Such great info here. I’ve had the AT6000 for weeks but now that I am blowing slow and not taking a big breath first, I am registering more consistently. My reading is usually between .60 and .87 which seems strange compared to values that others report. But it is nice to see something other than 0.00!

#613

Hi guys,

Wanted to share my readings by using two different cheap breathalyzers and check whether you are getting similar results. I would like to understand which of the them is more accurate.
Side info: I follow keto diet and apply IF (only one meal a day, so I eat every 24h or so).

After wake-up:

  • Keychain: 0.09 BAC
  • AT6000: 0.14 BAC

Before going to bed (and before brushing teeth :slight_smile: ):

  • Keychain: 0.05-0.08 BAC (it depends)
  • AT6000: 0.14 BAC (quite consistent)

Note: I received AT6000 recently and did not take so many measurements as with Keychain. But, basically I see that AT6000 reports even twice as high as Keychain. Did you observe the same behavior?

Cheers!

#614

I picked up the AT6000 on a lark, and I’m not sure it’s all that useful. Like @hadamard, mine shows between 0.14 and 0.16 consistently. The problem is, either I’m MUCH harder to knock out of ketosis than I thought I would be for someone who has been doing this for 2 weeks, or it pretty much always reads around 0.15. Or I’m an alcoholic. :slight_smile: Even when I’ve had what I’d consider enough carbs to take me out of keto, it reads the same.

#615

Thank you @Driven. However, when my wife uses AT6000, it reports 0.0 BAC, which is ok, since no keto no alcohol.
It would be great if others share their experience with both AT6000 and Keychain to try to understand what we can expect from those devices.

Thanks!

(Madge Boldt) #616

So here I am, replying to myself! Today I looked at the display and it said 70 mg/L. I wondered…how do I get it to display in %bac? I pressed the button once and there it was. 0.15%BAC. Duh! Have had this thing for weeks. #usererror

(Stephen Smith) #617

I’ve got my AT6000 and have read this whole thread but am still confused – what readout on AT6000 is everyone using? For example, I just blew this with these number rotating in sequence:

.03 (BAC %)
.32 (BAC % x 10?)
.17 (BAC % x 10 / 2?)
32 (BAC% x 100?)

It seems like BAC % x 10 is the most useful number b/c I get an extra digit readout compared to the 1st number. And the rest are just math caculations. But what number is everyone else using above??

Thanks,
Steve

#618

Just a few more data points.

After being definitely out of ketosis for a while, the AT6000 showed nothing but zeros. After getting back on the wagon, it took several days and it started showing 0.13% occasionally. Another day, and it was showing 0.16%, and was consistent. Today it is showing 0.14% consistently.

In summary, I think it basically can act as a Yes\No. Expecting the numbers to relate to any ‘level’ of ketosis seems a stretch, but it might be possible. For $8, it’s still a nice tool for confirmation.

(Vincent Hall) #619

I’d agree on the yes/no use for the cheapo breathalyzer. Mine reads usualy 0.04 give or take 0.01.
One thing I notice is some breathalyzers seem to read out in the teens ie 0. 13, I’ve just had (well 3/4hr ago) 2300 cal meal, 25 net carb, 204 fat, 83 protein. And have just blown 0.03 3 times after first blow of 0.04
My meter usually shows this even when my blood ketones are 3.3 ish after fasting before exercise.
\v/

(Stephen Smith) #620

Maybe this is another topic, but I’ll ask here anyway – I use AT6000 and agree w/readings. But how long does it take after meal for breath acetone to be impacted? A few mins? Few hours? I know YMMV but what’s your experience?

(Todd Allen) #621

For me increases are fastest when fasting, meals slow increases down but I don’t eat MCT oil or exogenous ketones.

When I’m deep in ketosis there is a long lag on the order of several hours to a day for meal related drops. The amount of carbs I eat doesn’t seem to have a big impact on the speed at which this happens though more carbs makes for a bigger drop. I’m guessing that ketone production falls off fairly quickly but high blood ketones buffer the rate of change of breath ketones until the blood ketones are significantly depleted. I also expect the results vary depending on how fat adapted one is. As one becomes more fat adapted their muscles use more fatty acids and ketones are spared for use by the brain. If muscles are using ketones changes ought to occur faster. Also I mostly eat low glycemic carbs. I suppose if one ingested a lot of high glycemic carbs and spiked their blood sugar they might shut down the use of ketones and get a sharper drop in breath ketones while blood ketones remain elevated.

If one wants to know the details badly enough it would be easy to test though kind of expensive for the blood ketone strips.

(Dan Dan) #622

Good Question

I pratice IF(OMAD)/EF(OMAD) KETO WOE :grinning:

I fast 22 to 45 hrs and feast 2 to 3 hrs (3000 kcals 50 net carbs average) :yum:

As expected the longer I fast the higher the readings and the impact of feasting is lower :wink:

I have observed that my readings continue to increase and stabilize 6 to 8 hrs after feasting then will decrease 6 to 8 hrs then increase :thinking:

“May the Force (fat adaption) be with you”

IF/EF Keto WOE is Self-Discovery :wink:

Good luck and much success in your journey in IF/EF Keto WOE :grin:

(Dan Dan) #623

Breath vs Blood Ketone testing
PPM to mmol/L ?
by Michel Lundell on 23 March 2016

“May the Force (fat adaption) be with you”

IF/EF Keto WOE is Self-Discovery :wink:

Good luck and much success in your journey in IF/EF Keto WOE :grin:

(Dan Dan) #624

Breath Acetone as Biomarker for Lipid Oxidation and Early Ketone Detection

Breath acetone measured by SIFT-MS is more sensitive than blood ketone measured by capillary blood monitors and urine ketone measured by dipsticks, and it is the biomarker of choice when detected with a resolution of few part-per-billion by volume. Breath acetone is a convenient way to detect ketones due to the non-invasive nature of the method. In addition to the convenience of sampling, breath acetone also provides analytical advantage because it is easier to release from the body compared to other blood ketones that are soluble in blood and urine. Furthermore, the data presented in this study confirmed breath acetone as a biomarker for monitoring lipid oxidation, and demonstrated the advantages for ketosis and ketoacidosis screenings.

https://www.peertechz.com/Obesity-Diabetes-Metabolic-Syndrome/GJODMS-1-103.php

“May the Force (fat adaption) be with you”

IF/EF Keto WOE is Self-Discovery :wink:

Good luck and much success in your journey in IF/EF Keto WOE :grin:

#625

I was so discouraged after a couple of months of consistent readings I lost my knack for getting readings and had 0.00 repeatedly. I was at the point of thinking I should spend the money on a blood meter or a Ketonix when I tried my cheapo again today and got a great reading of .11% BAC!!! Hoping I do not spontaneously forget how to do this again!

#626

I have been using an AT6000 and like it except the beeping like crazy. Is the Greenwon quieter?

(Justin Rojas) #627

for me 4hrs after a meal.

(Marc) #628

I found this link useful - it compares and reviews Ketonix and 3 cheap alcohol breathalyzers; and has some handy data and graphs as well as suggestions on breathing techniques to get a consistent result.

http://fellrnr.com/wiki/Breath_Acetone_Meters