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Test Code LAB446 Sodium, Urine, 24 Hour

Methodology

Ion-Selective Electrode (ISE)

Performing Laboratory

RCH-SPH

Specimen Requirements

10 mL from a 24-hour urine collection in a plastic urine container. No preservative.

Note:  1. 24-Hour volume is required on request form for processing.

            2. Follow instructions in “Urine Collection” in “Special Instructions.”

Specimen Stability

Refrigerated: 1 week

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

84300

Special Instructions