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Osmolality, Urine, 24 hr
Test CodeUOSM24
Preferred Specimen
50 mL urine aliquot from 24-hour collection - no preservative
Minimum Volume
10 mL
Instructions
Mix 24 hour specimen well and note total volume on aliquot.
Transport Container
Leak proof container
Transport Temperature
Refrigerated (cool packs)
Specimen Stability
Refrigerated: 24 hours
Setup Schedule
24/7
Report Available
Same day
Clinical Significance
Osmolarity measurements are most often used to help determine if a patient is in a hyperosmolar state. Such states are often seen in renal failure (hyperuremia),diabetes (hyperglycemia) and disease states in which there is water loss in excess of solute loss.
