The night before the blood draw, it is usually necessary to fast for 6-8 hours, that is, it is best not to eat after 10:00 pm. This will ensure that the specimen of blood obtained from the blood draw will remain in a better condition, especially for blood glucose testing and liver function testing. If you eat late the day before, there may be interference, and lipid problems are actually more interfered with by diet. So if necessary not only avoid eating after 10 pm the night before the blood draw, but also it is best to eat a light diet at dinner and avoid eating too much. It is helpful to obtain stable and reliable results.