Test Code 24H UR MG Magnesium, 24 Hour, Urine
Methodology
Colorimetric
Performing Laboratory
Decatur Morgan Hospital-Decatur Campus
Specimen Requirements
Submit an entire 24-hour urine collection in a urine container.
No preservative. Refrigerate specimen during collection, and send
specimen refrigerated.
Note: 1. Starting and ending times
of collection and patient’s age are required on
request form for processing.
2. Follow instructions in “Urine
Collection—Decatur” in “Special
Instructions.”
Reference Values
1.2-29.2 mg/24 hours
Test Classification and CPT Coding
81050 - urine timed measurement
83735 - magnesium