Every now and then I toast a slice of low carb bread (3 carbs) and have a sardine on it. I test myself and the result is an ok 6.6 aporox. I am usually finding my tests 5.5 to 6.6. Now is the watermelon season and I love the stuff and moderation is very hard as I know it contains sugar. But I have loads after my usual meal, when I test I find the watermelon has little effect, the number is between 5.0-5.9. The one slice of low carb bread returns a higher test result than the mountains of watermelon. It is so odd. My observation. m