Does drinking water affect blood sugar tests?
Hello, I will have my full body check-up tomorrow. My doctor asked me not to eat or drink tea or coffee before the test. Can I drink water before that? Does drinking water affect blood sugar tests? I am confused please help.
@genesis Hello, Water does not affect the results of a blood test and is acceptable to drink when a person needs to fast. Drinking water before a fasting blood sugar test can actually decrease blood sugar levels or at least prevent levels from getting too high. Water allows more glucose to be flushed out of the blood. When you’re dehydrated, it means your overall blood volume is lower than normal, but your sugars will be the same. This means your blood is more concentrated (not diluted with water) and your blood sugar levels will be higher.