Mnemonic: OSMOST
Container: stool container, or UA cup
Handling: Stool sample must be fresh, not more than 24 hours old. Sample must be liquid enough to obtain a supernate post centrifugation. Solid stool is unacceptable for analysis. PROCEDURE: Test performed as needed. Doctor will be notified if the turnaround time is exceeded. Turnaround time is 4 hours. Stat results are available within 1 hour.
Reported: Once a day Mon-Fri
CPT: 84930
Units: uosm/kg
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