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Order Code LAB1123 Osmolality, Serum

Additional Codes

Test Name in EPIC

EPIC Test Code           

Mnemonic

RV OSMOLALITY, SERUM

LAB1123

OSMOS

PRIOR TO 8/1/21:  OSMOS

Useful For

Assist in establishing the proper diagnoses and treatments for patients with disorders involving water and electrolyte imbalances.

Specimen Requirements

Specimen Type: Serum

Collection Container/Tube:

Preferred: Plain, red top tube

Acceptable: SST

Specimen Volume: 2 mL

Minumum Volume: 1 mL

Specimen Stability

Specimen Type Temperature Stability           
Serum Ambient 3 hours
  Refrigerated (preferred) 24 hours
  Frozen N/A

Reference Values

  • Neonate: may be as low as 266 mOsm/kg
  • Child/adult: 275 - 295 mOsm/kg
  • > 60 years: 280 - 301 mOsm/kg

Day(s) Test Set Up

Monday through Sunday

Performing Laboratory

Ridgeview Medical Center Laboratory

Methodology

Freezing Point Depression

Test Classification and CPT Coding

83930