Osmolality
Label Mnemonic: OSMS
Epic Lab Code: LAB107
Downtime Form: A-1a General Laboratory Requisition
Chemistry
6240 RCP
356-3527
Specimen(s):
Plasma
Collection Medium:
Plasma Separator Tube 4.5 mL
Alternate Collection Media:
Call laboratory for additional acceptable specimen collection containers.
Minimum:
3 mL whole blood in light green tope tube or ONE Microtainer® for pediatric patients.
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around Time:
1 hour (upon receipt in laboratory)
Reference Range:
Adult males 280-300 mOsm/kg; adult females 275-295 mOsm/kg
Methodology:
Freezing Point Depression
CPT Code:
83930
 
See also:
Osmolality-Other, Body Fluid