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Laboratory: Clinical Biochemistry
Test Name:
Test Code: MG
Clinical Information:
Test Indications:
Magnesium is a major intracellular cation that functions as a cofactor of many enzyme systems. All ATP-dependent enzymatic reactions require magnesium as a cofactor in the ATP-magnesium complex. The serum magnesium level is kept constant within very narrow limits and is regulated by the kidneys. This assay is used for the diagnosis and monitoring of hypo-magnesemia (magnesium deficiency) and hyper-magnesemia (magnesium excess).
Collection Devices:
Specimen Required:

Plasma: 2.0 mL
Pediatric Plasma: 0.2 mL

Stability 7 days refrigerated, 1 year frozen
Serum: 2.0 mL

Samples must be transferred to an aliquot tube and stored frozen if analysis will not be complete within 48 hours (#110-10-05 Serum / Plasma Separation Procedure & Transport)
Reference Values:
Male:         0.63 - 0.94  mmol/L
Female:    0.70 - 0.96
Stat or Routine
See Also:
More Information: