Hi. I am just wondering if anyone know how much higher dehydration can make hemoglobin/hematocrit appear. I recently spent the day in the hospital due to dehydration resulting from hyperemesis. I had been worried that I was getting anemic because I had also been blacking out on a regular basis (several times a day). They took my blood and tested the hemoglobin/hematocrit, etc., but did so before I received the IV fluids. They later told me that ll my blood test results were normal, and that the hemoglobin/hematocrit are in the low-normal range (I don't remember the numbers now, but they were in the low part of the normal range). Since I have been rehydrated and taking meds to control the nausea and vomiting, I have still been experiencing the black outs. It happens less frequently, but I still wonder if I might be anemic since my hemoglobin/hematocrit levels could have been elevated by the dehydration when the blood was taken (they had to stick me 4 times before they could get a vein...). Should I ask for a retest? I am scared of hurting myself with all this blacking out. Yesterday, I shut my finger in our heavy front door because I started to black out as I was closing it. That one was no biggie, but I am afraid to fall down, etc.