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HelpTest Code UOSM Osmolality, Random, Urine
Additional Codes
LAB420
Methodology
Useful for assessing the concentrating ability of the kidney.
Performing Laboratory
St. Mary's Regional Medical Center-Chemistry
CPT: 83935
Specimen Requirements
4 mL from a random urine collection. No preservative.
Reference Values
50-1,400 mOsm/kg
12 hour fluid restriction: >850 mOsm/kg
Day(s) Test Set Up
Monday through Sunday
Available STAT