any nurses etc who might have an idea on this? For perhaps two years , every time I get a CBC, which is often in my case due to low platelets, my hemoglobin and hematocrit are a little high. They ALWAYS tell me that I must be dehydrated. At first, I just let it go, but NOW I'm starting to wonder about it. For one thing, since it's very hard to draw my blood, I drink a crazy amount of water prior to the test. The day before I drink extra water and the morning of the test, I drink a ridiculous amount of water. I drink so much water, that I need to use the facilities several times before leaving the house and very very frequently the rest of day of the test. I drink an absurd amount of water because I'm sick and tired of the tech saying "DID YOU DRINK WATER?" Well, yes, I drank a freakish amount of water. Are these test results very common?