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Test Code URNA Sodium, Urine, 24 Hour

Additional Codes

EPIC:  LAB445

Methodology

Ion-Selective Electrode (ISE)


Used for work up of volume depletion, acute renal failure, and acute oliguria.

Performing Laboratory

St. Joseph Hospital

Specimen Requirements

Submit an entire 24-hour urine collection. No preservative. Refrigerate specimen during collection, and send specimen refrigerated.

Note:  1. Starting and ending times of collection are required on request form for processing.
2. Follow instructions in “Urine Collection” in “Special Instructions” for 24-hour specimens.

Reference Values

40-220 mmol/24 hours

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

81050 - timed urine measurement
84300 - sodium

Special Instructions