I was on the 6th day of a 7 day fast when I took a reading on my Keto Mojo Meter. Glucose was 68, Ketones were HI and GKI .4 which was the max it would go. The instructions said that a HI reading meant above 8mmol/L. I got nervous and broke the fast. The previous days reading was glucose 72 and ketones 6.7 with a GKI of .5. Has anyone else experienced any thing like this? A few hours after I broke the fast my readings were glucose 115, ketones 2.1 and GKI 3.0.
Why? Ketoacidosis? Because unless you’re a Type 1 diabetic and just begging for it you’d never get there. I’m not a fan of long fasts these days for a handful of reasons, but high ketones isn’t one of them. You were fine man.
Diabetic ketoacidosis is diagnosed by high glucose combined with ketones over 10.0. Symptoms don’t become a problem until ketones reach 20.0. With glucose as low as 68 and ketones only at 8, you are fine. Ketones rise during fasting, this is called, as you might guess, “the ketosis of fasting.”
As long as your pancreas is producing insulin, diabetic ketoacidosis is not a risk.
There is a condition called euglycaemic ketoacidosis, which is caused by certain drugs (in particular, SGLT-2 inhibitors). If you were taking one of those drugs, your doctor would have warned you.
If you felt OK, you were probably OK.
How long have you been doing this?
Just wondering, as that’s a high ketone reading. My theory: after a certain number of years, you can’t get to that level. So, I assume you’ve been doing this for not that long.
Started keto 4 years ago and have lost 15 lbs. I am 69. My weight is 145 to 150, 5ft 7, My A1C is 4.5. Had several Ketone readings in the 5 to 6 range after fasting for 3 days. Need to contact KetoMojo to find out why 8 and above is high.
Those should go down over time. I have coined the term “ketone resistance” to describe high ketones when you first start out. See what happens with a 3 day fast a year from now.
By the way, all of what you said (A1C, 3 day fasts, etc.) is impressive.
Readings above 8.0 mmol/L will show “HI,” meaning your ketone levels are above our ability to measure them.
Following are possible reasons you may get a HI reading:
- You are in Therapeutic ketosis. A therapeutic ketogenic diet can be helpful for a range of chronic health conditions such as cancer, epilepsy, Alzheimer’s disease or dementia.
- Wash and dry your hands, then repeat the test using a new test strip. If your result still flashes HI, contact your health care professional as soon as possible. This was from KETOMOJO
In the vernacular this is called ‘cover your ass’ from potential lawsuits.
Huh. Other meters seem to be able to measure higher levels than 8.0.