Ăn nhẹ. Hỏi thời gian chờ kết quả. Lưu ý vết thâm tím. Hỏi về khả năng kết quả không chính xác. Trao đổi về dung huyết với nhân viên lấy máu.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
If you were required to fast prior to the blood test, you’ll want to bring a snack for after the test. Also bring a bottle of water and a snack that doesn’t require refrigeration. This will tide you over until you are able to eat a meal.  Peanut butter crackers, a peanut butter sandwich, a handful of almonds or walnuts, or whey protein are all easy to transport and will give you some protein and calories until you can get a meal. If you forgot to bring anything to eat, ask the staff where you ha