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Test Code LAB0205732 Magnesium, Plasma or Serum

Methodology

Arsenazo Dye

Performing Laboratory

CentraCare Laboratory Services

Specimen Requirements

Specimen Type: Plasma

Container/Tube:

Preferred: Green top (Lithium heparin/PST)

Acceptable:  Serum ( Red Top, Gold/SST), Na Heparin Plasma (label specimen appropriately)

Specimen Volume : 0.5 ml

Minimum Volume: 0.20 ml

Specimen Transport Temperature

Refrigerated

Reference Values

0-7 days: 1.4-2.7 mg/dL

7-30 days: 1.7-2.4 mg/dL

1-24 months: 1.6-2.6 mg/dL

2-6 years: 1.5-2.4 mg/dL

6-10 years: 1.6-2.3 mg/dL

10-14 years: 1.6-2.2 mg/dL

>14 years: 1.8-2.6 mg/dL

Critical value (automatic call-back): ≤1.0 mg/dL or ≥5.0 mg/dL

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

83735