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OSMO
OSMOLALITY, SERUM

Test Code OSMO 
Test OSMOLALITY, SERUM 
Methodology Freezing Point Osmometry 
Description Useful in assessment of electrolyte and acid-base disorders. 
Specimen Draw blood in either a plain, red-top tube or serum gel tube. Spin down and send 1.0 mL (minimum volume: 0.5 mL) of serum refrigerated. 
Reference Values 280 - 300 mosm/kg 
Analytic Time 1 Day - Available STAT 
Day(s) Test Set Up Monday through Sunday 
CPT Code(s) 83930