A member asked:

How can the bun/creatinine ratio show dehydration?

A doctor has provided 1 answer

Dr. Michael Taylor answered

BUN/Cr > 20:1: Urea (BUN) is reabsorbed by the kidney; creatinine is not. In dehydration, as water decreases and urea is reabsorbed, the BUN rises. Eventually, the cr will rise, too (if dehydration continues), but it doesn't increase in magnitude as fast as the bun. The bun/cr ration is usually ~10:1...When it's greater than 20:1, this suggests dehydration.

Dr Michalski and 2 doctors agreed

Answered 9/5/2020

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A member asked:

How can the bun/creatinine ratio show dehydration?

A doctor has provided 1 answer

Dr. Michael Taylor answered

Dr Michalski and 2 doctors agreed

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