Osmolality, Serum
Performing Lab(s)
Memorial-Belleville only
Methodology
Freezing point depression
Specimen Requirement (s)
Specimen: serum Type: Container/Tube: SST (gold or marble) or plain red top
Specimen Volume: 4 mL
Specimen Minimum Volume: 1 mL of serum
Collection Instructions: NA
Lab instructions: NA
Day(s)/Shift(s) Test Set Up and Turnaround Time
Sunday through Saturday
Hours: 24 hours
Turnaround Time:
STAT: 60 minutes
Routine: less than 24 hours from receipt.
Transport and Stability
Transport temperature: Ambient to lab
Reference Values
275 - 295 mOsm/Kg
CPT/LOINC Codes
83930