Test ID: UOSMO
CPT code: 83935
LOINC: 2695-5
Specimen Type: Timed or random urine
Frequency: Setup: Daily; TAT <24 hours
Instructions: Random or timed urine. 1.0mL min. If timed, specify hrs and volume.
Text: Assess concentrating ability of the kidney.
Methodology: FREEZING POINT