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Test Code MG Magnesium, Plasma or Serum

Additional Codes

Ordering Mnemonic
MG

Methodology

Xylidyl Blue

Performing Laboratory

Holland Hospital Laboratory Services

Specimen Requirements

Submit only 1 of the following specimens:

 

Plasma

Container/Tube: Mint-top (lithium heparin) tube

Specimen Volume: 0.5 mL of plasma

Collection Instructions:

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

 

Serum

Container/Tube: Serum gel tube

Specimen Volume: 0.5 mL of serum

Collection Instructions:

Note: 1. Indicate serum.
2. Label specimen appropriately (serum).

Specimen Transport Temperature

Refrigerate

Reference Values

1.8-2.5 mg/dL
Critical values (automatic call-back): ≤1.0 mg/dL or ≥6.0 mg/dL

Day(s) Test Set Up

Monday through Sunday

Available STAT

Test Classification and CPT Coding

83735