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Magnesium (622X)
Test Code26013P
CPT Codes
83735
Preferred Specimen
1 mL serum collected in an serum separator tube (SST)
Minimum Volume
0.3 mL
Other Acceptable Specimens
Sodium heparin (green-top) tube • Lithium heparin (green-top) tube
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 30 days
Refrigerated: 7 days
Frozen: 30 days
Methodology
Spectrophotometry (SP)
Setup Schedule
Set up: Sun, Tues, Thurs; Report available: 4-7 days
Clinical Significance
Magnesium measurements are used in the diagnosis and treatment of hypomagnesemia (abnormally low plasma levels of magnesium) and hypermagnesemia (abnormally high plasma levels of magnesium). Magnesium is decreased in chronic nephritis, acute pancreatitis, and alcoholic cirrhosis. It is increased in acute or chronic renal failure and Addison's Disease.
