Urine Osmolality

This laboratory investigation measures Urine Osmolality using a urine specimen. It may help clinicians assess the relevant urinary analyte, understand aspects of kidney handling or metabolism, and investigate a concern identified from symptoms or other results. For timed collections, the complete collection period and correct storage are important; for random samples, follow the laboratory’s collection instructions. The result should be interpreted alongside clinical history, medicines, hydration, and other investigations. Please confirm any special preparation with the ordering clinician or laboratory.