To fast for 10 hours and get a blood test tomorrow. how can i avoid the hunger pangs?

You can't: Forgive my frankness. Be tough. And be thankful that you live in a country where you only have to ask, "How can I avoid hunger pangs?" when you're fasting for a lab test -- rather than from not having enough food to feed yourself or the people you love. Some of the great world faiths encourage folks to go without food for a time to remind them of those who have none. Let this idea strengthen you.