A member asked:

What happens to plasma and urine osmolarity with a lung tumor that secretes vasopressin (adh)?

A doctor has provided 1 answer

V plasma & ^ Urine: Vasopressin/adh increases the amount of water reabsorbed by the kidneys and decreases the amount of water excreted into the urine. With more water in the bloodstream, the concentration of everything else decreases (so osmolality goes down), while the concentration of everything in the urine goes up (as dose the urine osmolality).

Answered 10/3/2016

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