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Magnesium, Urine, 24 Hour

Container Type = Orange Urine or Orange Urine Red Lable or Orange Urine Yellow Lable

Container A or Red/Yellow

Test ID   LAB5194
EPIC Order
   MAGNESIUM, TIMED URINE
CPT Code(s)   83735
Group/Individual Test   Group
Laboratory   Core Laboratory
Tube Station   Deliver directly to the laboratory
Specimen Routine:
24 hrs urine container "A", red/yellow 24 hr urine container is also acceptable; See Comments
Availability: 24 hrs/day
Stability
Room temperature (Acidified): 7days
Refrigerator: 7 days
Frozen: 12 months
Turnaround Time   STAT 1hr; Routine 2hrs
Reference Range Normal: 24-255 mg/24 hrs;  varies with diet
Comments
  • Refrigerate container during collection. Note start/stop times on collection container. 
  • Red/Yellow container is also acceptable (contains acetic acid)
  • Total volume of collection will be reported with results.

Reviewed by J. Carr on January 05, 2026

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514