Test Code MAGRBC Magnesium, RBC
Collection Container
Green-top (heparin) tube, lavender-top (EDTA) tube, royal blue-top (EDTA) tube, or tan-top lead-free tube (SEE ORDERING NOTE)
Specimen Required
Submit plasma and RBC's in original tube to chemistry laboratory.
Specimen Volume
1 mL Red blood cells, RBC'S (From proper tube type)
Minimum Specimen Volume
0.2 mL Red blood cells, RBC's (From proper tube type)
Transport Temperature
Room temperature
Specimen Stability
Room temperature |
14 days |
Refrigerated |
14 days, |
Frozen |
14 days |
Freeze/thaw cycles |
Stable x3 |
Methodology
Atomic absorption spectrometry (AAS); inductively-coupled plasma/mass spectrometry (ICP/MS)
Reference Ranges
4.2−6.8 mg/dL
CPT Code
83735
Cause for rejection
Serum or plasma specimen