Hemoglobin above 15 for males or 14 for females, and hematocrit above 50% can indicate acute dehydration.

“if your like if your hemoglobin is like 15 plus it's funny we've talked about this in a few episodes before but I see that and I'm like man that dude's super fit that's like a 15 uh for hemogo would be pretty high 14 or so would be pretty good for a female that's also the exact same thing as a sign of acute dehydration um so hematocrit same thing if you're north of 50% you're probably dehydrated”