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Osmolality, Serum
Test CodeLAB107
Alias/See Also
Osmo, Serum
CPT Codes
83930
Preferred Specimen
4.5 ml (3.0 ml min) lithium heparin (green); alternate-SST (gold) or Red (no additive)
Minimum Volume
1 ml plasma; alternate-serum
Instructions
If testing will be delayed, pour off plasma or serum into an aliquot tube, if not in a gel barrier tube
Specimen Stability
Serum/Plasma specimens are stable up to 48 hours room temperature or refrigerated. It is recommended, however, that serum specimens be tested within 24 hours of collection
Methodology
Osmometry
Setup Schedule
Mon- Sun
Reference Range
289-308 mOsm/Kg
Clinical Significance
When used by a trained operator in clinical applications, the osmometer provides results that assist in establishing
the proper diagnoses and treatments for patients with disorders involving water and electrolyte imbalances
the proper diagnoses and treatments for patients with disorders involving water and electrolyte imbalances
Performing Laboratory
Piedmont Athens Regional
