The subjects had a mean (±SEM) age of 27 ± 2 y and a BMI (in kg/m2) of 24.7 ± 1.3. None of the subjects were diabetic, pregnant, consuming weight-reducing diets, allergic to dairy products, or lactose intolerant. Each subject was fully informed of the experimental procedures before giving written consent and participating in the study. The study was approved by the Ethical Review Office of the University of Toronto. Breath acetone is potentially useful as an indicator of ketosis, but its use has not yet been evaluated in patients with epilepsy consuming a KD.
But your protein should not exceed 25% of your daily calorie intake. For others, it may take a little longer to get into ketosis.
But this method is invasive, requiring a finger prick for each reading. On top of the device (usually running $30 or more), the test strips cost about $1 - $3 per strip. Depending on how often you’re checking ketones, this could add up. Blood ketone measurement requires a handheld device, in which a small amount of blood is placed onto a test strip, which is then inserted into the ketone meter.