Osmolality, Serum or Plasma
0020046
Ordering Recommendation
 
Mnemonic
OSMO
Methodology
Freezing Point
Performed
Sun-Sat
Reported
Within 24 hours  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
  
Collect
Serum separator tube or plasma separator tube.  
Specimen Preparation
Separate serum or plasma from cells within 2 hours of collection. Transfer 0.5 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
  
Remarks
  
Stability
After separation from cells: Ambient: 24 hours; Refrigerated: 1 week; Frozen: 6 months  
Reference Interval
0-16 years: 271-296 mOsm/kg
17 years and older: 280-303 mOsm/kg  
Interpretive Data
 
Note
 
CPT Code(s)
83930
Components
Component Test Code*Component Chart NameLOINC
0020046Osmolality2692-2
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Plasma osmolality
  • serum osmalality