Magnesium, RBC

Sunquest Code:MAGNRC  
Epic Code:LAB4280Epic Name:Magnesium RBC
Synonyms:Intracellular Magnesium; MgRBCs; Magnesium, Red Blood Cells
Methodology:Inductively coupled plasma/mass spectrometry
Turnaround Time:Specimens are sent to reference laboratory Mon-Sat; results are reported within 1-5 days.

This test was developed and its performance characteristics determined by ARUP Laboratories. The U.S. Food and Drug Administration has not approved or cleared this test; however, FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.

Collection Instructions

Optimal Volume:4 mL
Minimum\Peds Volume:1.4 mL
Container:Trace Element, EDTA (DE)
Causes for Rejection:Frozen, clotted or whole blood specimens with RBCs not separated after centrifugation. Plasma sample. Specimens collected in tubes other than royal blue (EDTA). Specimens transported in containers other than royal blue (EDTA) or Trace Element-Free Transport tube.

Processing and Shipping

Specimen Processing:Centrifuge whole blood within 2 hours of collection and discard plasma. Aliquot 2 mL, 0.6 mL minimum of RBCs immediately into a metal-free plastic vial.
Shipping Instructions:Ship RBCs at room temperature.
Stability:After separation from plasma: 1 week at room temperature or refrigerated.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:92079


Reference Range:1.5-3.1 mmol/L Interpretive Data: RBC magnesium results reflect the intracellular stores and general homeostasis of magnesium. Results may be falsely low if RBCs in the submitted specimen are lysed or not promptly separated from plasma.

Click HERE to Report test errors or omissions.
*If no email program is associated with this computer, please contact: for TestID: 3711"