Magnesium, RBC

CPT: 83735
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Expected Turnaround Time

2 - 4 days


Related Information


Related Documents


Specimen Requirements


Specimen

Red blood cells (RBCs)


Volume

1 mL


Minimum Volume

0.2 mL


Container

Green-top (heparin) tube, lavender-top (EDTA) tube, royal blue-top (EDTA) tube, or tan-top lead-free tube


Collection

Centrifuge tube as soon as possible and separate plasma from cells. Discard the plasma. Using the original collection tube, submit only the RBCs to the laboratory.


Storage Instructions

Room temperature


Stability Requirements

Temperature

Period

Room temperature

14 days

Refrigerated

14 days


Causes for Rejection

Serum or plasma specimen


Test Details


Use

Evaluate magnesium deficiency


Limitations

This test was developed and its performance characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration.


Methodology

Atomic absorption spectrometry (AAS); inductively-coupled plasma/mass spectrometry (ICP/MS)


Reference Interval

3.7–7.0 mg/dL


LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
080283 Magnesium, RBC 26746-8 080283 Magnesium, RBC mg/dL 26746-8

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