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Magnesium, Plasma or Serum
Test Code2070
Alias/See Also
Mg
Preferred Specimen
One 4 mL plasma separator tube or serum separator tube.
Minimum Volume
1 mL plasma or serum at 2-8°C. (Min: 0.5 mL) Submit specimen in an ARUP Standard Transport Tube.
Transport Temperature
1 mL plasma or serum at 2-8°C. (Min: 0.5 mL) Submit specimen in an ARUP Standard Transport Tube.
Specimen Stability
After separation from cells: Ambient: 1 week; Refrigerated: 1 week; Frozen: 1 year
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Specimens collected in EDTA, oxalate/fluoride. Hemolyzed specimens.
Methodology
Spectrophotometry
Setup Schedule
Sun-Sat
Report Available
Within 24 hours
Limitations
Allow specimen to clot completely at room temperature. Separate serum or plasma from cells ASAP.
