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Test Code MG Magnesium, Plasma or Serum

Specimen Requirements

Submit only 1 of the following specimens:

 

Plasma
Draw blood in a green-top (lithium heparin) tube(s) or a plasma gel tube(s). Spin down and send 1 mL of lithium heparin plasma refrigerated. Avoid hemolysis.

Note:  1. Indicate plasma on request form.
2. Label specimen appropriately (plasma).

 

Serum
Draw blood in a plain, red-top tube(s) or a serum gel tube(s). Spin down and send 1 mL of serum refrigerated. Avoid hemolysis.
Note:  1. Indicate serum on request form.
2. Label specimen appropriately (serum).

Performing Laboratory

Conway Regional Clinical Laboratory Services

Reference Values

1.7-2.8 mg/dL

Critical values (automatic call-back):  <1.0 mg/dL or >5.0 mg/dL

Methodology

Chlorophosphonazo III

Day(s) Test Set Up

Monday through Sunday

Available STAT

Test Classification and CPT Coding

83735