ARUP's Laboratory Test Directory

Osmolality, Serum or Plasma : 0020046

Mnemonic: OSMO

Methodology: Freezing Point
Performed: Sun-Sat
Reported: Within 24 hours
Specimen Required: Collect:  One 4 mL serum separator tube or plasma separator tube.

Transport:  0.5 mL serum or plasma at 2-8°C. (Min: 0.5 mL)  Submit specimen in an ARUP Standard Transport Tube.

Pediatric Collection/Transport:  0.5 mL serum or plasma at 2-8°C.

Remarks:  Separate serum or plasma from cells ASAP.

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
CPT Code(s): 83930
 
 

 

 

 
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