MAGNESIUM, RBC

Specimen Required
Draw blood in dark blue EDTA tube. Spin, separate, remove plasma, and send 0.5 mL RBC's (0.2 mL minimum) refrigerated in original collection tube. Please label tube "Packed RBC's"

Alternate Specimen
Packed cells EDTA lavender top tube
Whole blood EDTA lavender top tube
Whole blood EDTA dark blue tube

Methodology
Quantitative Inductively Coupled Plasma/Mass Spectrometry

Stability
Packed cells: room Temperature: 7 days; Refrigerated: 7 days; Frozen: Unacceptable
EDTA Whole blood: Room Temperature: 4 days; Refrigerated; 7 days; Frozen: Unacceptable

Reference Range
4.0-6.4 mg/dL

Performed
Monday, Thursday

Turnaround Time3-7 days
Test CodesMAGNRBC
37-00770
CPT-4 Code (s)
83735
LOINC Codes
2597-3

Warde
Medical
Laboratory