To aid in evaluation of water balance and kidney function.
300 - 1300 mOsm/kg for random specimens
- OSMOLALITY, URINE
STAT requests for this test will be performed on a STAT basis (supervisory staff approval is not required).
Collect 24 hour urine specimen with no preservative. Aliquot 2 mL into a plastic urine container and refrigerate. Record total 24 hour urine volume and collection dates/times on request form. Random urine is also acceptable.