Magnesium




Test Mnemonic

MG1

CPT Codes

  • 83735 - QTY (1)

LOINC ®

19123-9

Performing Laboratory

n/a


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mLPlasmaLithium heparin PST (Lt. Green) Centrifuge and refrigerate.Submit in original tube or aliquot into CCL aliquot tube

Alternate Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mLSerumSST (Gold) Centrifuge and refrigerate. 

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
0.4 mL     

Stability

Environmental Condition Description
Ambient7 days
Refrigerated7 days
Frozen1 year

Days Performed

Sun - Sat

Turnaround Time

8 hours

Methodology

Name Description
Xylidyl Blue 

Reference Range

Magnesium
Sex Age From Age To Type Range Range Unit
   Months4 MonthsNormal1.5 - 2.2mg/dL
 5 Months11 MonthsNormal1.7 - 2.3mg/dL
 1 Years6 YearsNormal1.7 - 2.3mg/dL
 6 Years12 YearsNormal1.7 - 2.1mg/dL
 12 Years17 YearsNormal1.7 - 2.2mg/dL
 18 Years99 YearsNormal1.7 - 2.3mg/dL
   Years99 YearsUrgent< 1.0 or > 6.0 mg/dL

Special Info

Hemolysis will falsely increase values.

Clinical Info

Evaluation of electrolyte balance, hypokalemia

Clinical Limitation

n/a

Clinical Reference

n/a