Laboratory Services

Magnesium

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Updated Test Information:

Test Description
Magnesium
Synonym(s)
Mg
Test ID
MG
General Information
Numerous studies have shown a correlation between magnesium deficiency and changes in calcium‑, potassium‑ and phosphate‑homeostasis which are associated with cardiac disorders such as ventricular arrhythmias that cannot be treated by conventional therapy, increased sensitivity to digoxin, coronary artery spasms, and sudden death. Additional concurrent symptoms include neuromuscular and neuropsychiatric disorders. Hypermagnesemia is found in acute and chronic renal failure, magnesium excess, and magnesium release from the intracellular space.
Specimen Type
Serum
Alternate Specimen Type
Red, Li-heparin plasma
Specimen Requirements
SST
Stability
7 days at 15‑25 °C
7 days at 2‑8 °C
1 year at (-15)‑(-25) °C
Methodology
Colorimetric
Estimated TAT
0-2 days
Testing Schedule
Monday-Saturday
CPT Code(s)
83735
Minimum Sample Volume
1 mL
Pediatric Min. Volume (if applicable)
500 uL
Reference Range

Serum/plasma

Newborn 1.5‑2.2 mg/dL
5 months‑6 years 1.7‑2.3 mg/dL
6‑12 years 1.7‑2.1 mg/dL
12‑20 years 1.7‑2.2 mg/dL
20-60 years 1.6‑2.6 mg/dL
60‑90 years 1.6‑2.4 mg/dL
> 90 years 1.7‑2.3 mg/dL

 

Performing Lab
Incyte Diagnostics
LOINC Code(s)
19123-9