Increased ketones in the breath or urine
A breath analyzer is a different way of determining blood ketone levels. It monitors acetone, one of the three main ketones seen in your blood when you are in ketosis.
Because more acetone leaves the body when you are in nutritional ketosis, this gives you an idea of your body’s ketone levels. Although less accurate than the blood monitor method, the use of acetone breath analyzers has been demonstrated to be quite reliable. Another effective method is to use specific indicator strips to regularly check for ketones in your urine. These can be a simple and affordable way to check your ketone levels each day. They also measure ketone excretion through the urine. However, they’re not considered very reliable.