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Test Code LAB406 Magnesium, Urine, 24 hours

Methodology

Colorimetric

Performing Laboratory

RCH

Specimen Requirements

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

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

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

Specimen Stability

Refrigerated: 7 days

Frozen: -20C for 1 month

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

83735

Special Instructions