nnewton, I talked to one of the cardiac surgeons I work with about about dehydration and high Hct. The amount of intravascular volume you need to lose in order to significantly raise a Hct. is astronomical. Hct. may increae by .01 or so but not much more than that.

A 70 KG person with a Hct. of UCI legal .49 needs to lose more than 200CC of INTRAVASCULAR/BLOOD VOLUME to raise thier Hct. to a UCI illegal .51. It may not sound like much but 200cc intravascular is alot of volume.