Joanna J,

After experimenting testing urine, breath and bool\d ketones, I don't think it is that important to test at all during the weight loss stage. I see some value using them as Dr. Atkins prescribed, as you add back different foods and carbs. Having said that, I still test, and I find the cheap breathalyzer is the most convenient. Its a one time purchase, (at least until it stops working) and it just takes a 10 second warm up and 10 second blow to test. I stopped buying the blood ketone strips, and I don;t think you need to use multiple methods, but you can get a breathalyzer cheap, so why not?