To aid in evaluation of water balance and kidney function.
300 - 1300 mOsm/kg for random specimens
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Days Test Performed
Daily, 24 hours
Soft Order Code
STAT requests for this test will be performed on a STAT basis (supervisory staff approval is not required).
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Offsite Collection Instructions
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.
Specimens collected with Acid Preservative are not acceptable.
2 mL aliquot of random or 24 hour urine collection
0.5 mL aliquot of random or 24 hour urine collection