Problems With Concentration

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Definition

A urine concentration test measures the ability of the kidneys to conserve or excrete water appropriately.

See also:

  • Urine osmolality test
  • Urine specific gravity

Alternative Names

Water loading test; Water deprivation test


How the test is performed

For this test, the specific gravity of urine is measured before and after one or more of the following:

  • Water loading -- drinking excessive amounts of water or receiving fluids through a vein
  • Wa...
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