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Test Code MG24 Magnesium, 24 Hour, Urine

Performing Laboratory

Northwell Health Laboratories

Methodology

Colorimetric

Reference Values

14.6-24.2 mg/24 hours

Test Classification and CPT Coding

81050 - urine timed measurement

83735 - magnesium

Day(s) and Time(s) Performed

Monday through Sunday

Physician Office Specimen Requirements

Container/Tube: 24-hour urine collection. No preservative required.

Specimen: Submit an entire container

Transport Temperature: Send specimen refrigerated in a plastic urine container.

Note:  Starting and ending times of collection are required on request form for processing.