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HelpTest Code UMG Magnesium, Urine, LAB405
Performing Laboratory
St. Luke's Hospital Cedar Rapids
Specimen Requirements
Container/Tube:
Specimen Volume: 0.5 mL from a random collection
Stability: Urine specimens for magnesium may be stored up to 3 days at 2-25°C.
Reference Values
No reference range
Day(s) Test Set Up
Monday through Sunday
Useful For
Renal clearance plays a large role in magnesium homeostasis. The determination of urinary magnesium is useful in estimating the rate of magnesium excretion.
Methodology
Colorimetric (Dye-Methylthymol Blue)
Test Classification and CPT Coding
83735-Magnesium
Report Available
Within 1 hour of receipt