Sign in →

Test Code MG Magnesium

Performing Laboratory

Memorial Hospital Laboratory- Automated Procedures  304-388-5953       
General Hospital Laboratory 304-388-6244
Women and Children's Hospital Laboratory 304-388-2385
Teays Valley Hospital Laboratory 304-757-1770
Cancer Center Laboratory 304-388-8317
Plateau Medical Center Laboratory 304-469-8621
Greenbrier Valley Laboratory 304-647-6060
Parkersburg Laboratory 304-865-3679
Beckley Cancer Center Laboratory 304-461-2222

Specimen Requirements

Plasma- Mint Green, Dark Green Lithium Heparin or Serum- SST gold top, red top

Allow SST or red top to completely clot

Spin and physically separate plasma/serum from contact with cells as soon as possible

4 mL of plasma/serum (minimum 2 mL)

Specimen Rejection

Memorial, General, WCH, Teays, Plateau, Cancer Center 

  • Improperly labeled, collected, stored, and transported
  • Quantity not sufficient

Greenbrier, Parkersburg, Beckley

  • Hemolysis
  • Lipemic
  • Specimen collected in EDTA, Fluoride, and Citrate

Storage and Stability

Refrigerate 2-8oC 1 week

 

Additional storage/stability at Greenbrier, Parkersburg, Beckley

Refrigerate 2-8o C < 1 week
Frozen < 1 month

Reference Values

> 18 yrs 1.8-2.4 mg/dL
0 days - 18 yrs 1.5-2.2 mg/dL

Critical Value: <1.0 and > 4.0 mg/dL

Methodology

Memorial, General, WCH, Teays, Plateau, Cancer Center - Biochromatic enzymatic assay

Greenbrier, Parkersburg, Beckley- Reflection density

Days Test Set Up and Turnaround

Monday through Sunday, Continuously 

AM Collection Expected by 9AM same day
Routine Expected within 24 hrs
Stat Expected within 1 hr
Timed Expected results are test dependant

CPT Coding

83735