Answer for I take Keto -os. When should I check my ketones using blood meter ? How many times a day should I che ck ?

It is really up to you and what your goals are. If you take in the morning in a fasted state and register in ketosis (0.5 or higher) it is a good bet you will be all day and it tells your your diet in on point.  You can also spot check for how specific food effect you.  Take ketones before and after eating a food to see how it effects your state. 🙂