After overnight 10h fast, glucose fasting 5.1, a1c 5.4. but if i don't eat enough by aftern, i get weak & hands shake. so i have low bl s problem? =(

Don't fast too long,: Your glucose readings seem OK, but do not fast too long, as this could be due to a low blood sugar from not eating. I don't know your history, but try to eat something if you feel like this, especially after a 10 hr fast. If these symptoms persist, see your doctor for an exam and tests, and check your glucose with a meter if you have one at the time of symptoms. Best of luck.