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HelpTest Code LAB107 Osmolality, Serum
Additional Codes
OS
Collection:
Specimen: Blood
Preferred: Lt Green w/ Gel - Li Hep
Acceptable: SST or Red Top
Specimen Volume: 5 mL; Minimum 0.5 mL
Pediatric Collection:
One Lt Green w/ Gel - Li Hep, SST, or Red Top microtainer filled to 500 uL.
Stability:
Separate plasma/serum from gel/cells within 4 hours of collection. Once serum/plasma is separated from cells:
Ambient: 8 Hours
Refrigerated (preferred): 1 Week
Turnaround Time (TAT):
STAT: 1 HOUR
Routine: 4 HOURS
Test Availability:
Daily / 24 Hours / Available STAT
Performing Laboratory Section:
Chemistry / UMC MAIN LABORATORY
Reference Interval:
280 - 300 mOsm/kg