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Mayo Clinic Laboratories

Test Code LAB446 SODIUM 24 HOUR URINE

Important Note

A 24 hour Creatinine is included.

DO NOT order a UCRE24 if you order this test.

Additional Codes

CPT Code: 84300

Methodology

Includes creatinine.

Performing Laboratory

Peninsula Regional Medical Center - Chemistry

Specimen Requirements

Submit an entire 24-hour urine collection in a plastic urine container. No preservative. Refrigerate specimen during collection, and send specimen refrigerated. Forward promptly to laboratory.

Note: Follow instructions in Urine Collection in Special Instructions.

Reference Values

40-220 mEq/24 hours

Special Instructions