Ketone Levels in Blood
Blood ketones are best measured on a fasted stomach in the morning (before breakfast, that is). Here are a few pointers on how to interpret the result:
- Below 0.5 mmol/L is not considered “ketosis”. At this level, you’re far away from maximum fat-burning.
- Between 0.5-1.5 mmol/L is light nutritional ketosis. You’ll be getting a good effect on your weight, but not optimal.
- Around 1.5 – 3 mmol/Lis what’s called optimal ketosis and is recommended for maximum weight loss.
- Values of over 3 mmol/L aren’t necessary. That is, they will achieve neither better nor worse results than being at the 1.5-3 level. Higher values can also sometimes mean that you’re not getting enough food. For type 1 diabetics, it can be caused by a severe lack of insulin, see below.