MAGNESIUM, SERUM/PLASMA

Synonyms: Mg Serum MG Plasma
Computer Code: MG
Specimen Collection: 2 mL blood (light green top (Li Heparin) preferred. Red/gold acceptable). Pediatrics: 0.5 mL blood (light green top (Li Heparin) preferred. Red/gold acceptable).
Minimum Volume: 0.5 mL
Handling Instructions for Offsite Areas: Allow to clot, centrifuge for 20 minutes, refrigerate. Serum must be removed from red top tube.
Reference Values: 1.5-2.6 MG/DL Critical Value: < or equal to 1.0 mg/dL or > or equal to 5.0 mg/dL
Lab Code: CC
Requisition: C/H
Test Frequency: Daily
Routine TAT: 2 hrs
Stat TAT: 60 min
CPT Code(s): 83735
LCD or NCD: LCD LCD LCD
Methodology Used:
See Addendum XVII