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fluid deprivation test

(FLOO-id DEH-prih-VAY-shun …)
A test to measure how much urine is made and how concentrated it becomes when no fluid is given to a patient for a certain amount of time. This test is used to see how well the kidneys work and to help diagnose diabetes insipidus (a condition in which a person is very thirsty and makes large amounts of urine). Also called water deprivation test.
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