@denisetlouie,
I was reading more about Keto Mojo, which now has poor Amazon reviews. I do not recommend it.

I have used my Precision Xtra for 6 years, and it is reliable and matches lab-drawn values. I replace the battery occasionally, and I buy glucose and ketone test strips on Amazon (photo attached). Abbott and YouTube have videos available to watch, and Abbott has an excellent customer support number.

A very low-carbohydrate diet is deficient in vitamins and minerals. Ask your doctor to test for vitamin and mineral deficiencies. The Carb Genius app will show you the vitamins and minerals your diet generally lacks, but Cancer patients have unique needs. I supplement my diet with half a multivitamin and minerals, calcium, Vitamin D, zinc, and magnesium.

Another great Cancer resource is Cancer Care, written by Dr. Paul Marik, MD. The 200-page document is well-referenced. You can download it from the Internet He updates the online document regularly with new research. It is always wise to discuss recommendations with your doctor to see if they are appropriate for you.