Sign in →

Order Code LAB1123 Osmolality, Serum

Important Note

This test is currently down and is being routed to Mayo Clinic Laboratories

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