Your numbers look fine. The difference in the test could be due to something as simple as not being as well hydrated for the blood test. Next time you have blood drawn, make sure you drink a lot the day before. This will give a more accurate reading. Try not to worry too much.
Actually low BUN and Creatinine values are not indicative of a dehydrated state, ever. For your age and sex, your BUN and Creatinine are very good, and expectable for a healthy, young woman. Creatinine will usually measure lower for females than for males, based on lean muscle mass being proportionately lower for the former.
Last edited by Deanne1962; 06-18-2012 at 08:25 PM.