Osmolality, Urine

Osmolality refers to the concentration of dissolved particles within a given unit of water. This test measures the concentration of particles dissolved in urine, such as salts, sugars, and other substances. The Osmolality, Urine test assess problems with body water balance and  fluid regulation; diagnose conditions such as hyper or hyponatremia; and to monitor the effectiveness of treatment for these conditions.This test is recommended for assessing renal concentrating ability; evaluating patients with suspected kidney disorders; monitoring patients with known kidney diseases or diabetes insipidus;  evaluating fluid and electrolyte imbalances as in chronic diarrhea, prolonged vomiting, dehydration; evaluating patients with high or low blood sodium  and patients with symptoms such as increased thirst, frequent urination, fatigue, or confusion.