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Test Code MG Magnesium

Specimen Type

Blood

Container

Mint green top with gel separator

Preferred Volume

4 mL

Availability

24/7

Turnaround Time

3 hours

STAT Availability

Available

Test Usage

This assay is used for diagnosing and monitoring hypomagnesemia (magnesium deficiency) and hypermagnesemia (magnesium excess).

Test Methodology

Spectrophotometric, endpoint

CPT Code

83735

STAT Turnaround Time

1 hour

Minimum Volume

2 mL

Reference Range

1.6 – 2.5 mg/dL

Critical Results

<1.0 or >8.0 mg/dL

Test Limitations

Chelating anticoagulants such as EDTA, fluoride and oxalate must be avoided.

Hemolysis will yield elevated results as levels in erythrocytes are two to three times higher than serum.

Test Includes

quantitative magnesium determination in plasma

Fee Code

43362