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Test Code MGRBC Magnesium, Red Blood Cells

Performing Laboratory

Quest Diagnostics Nichols Institute, Chantilly VA


Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Reference Values

4.0-6.4 mg/dL


Test Classification and CPT Coding


Physician Office Specimen Requirements

Container/Tube:  Dark Blue top (EDTA) tube(s) 

Specimen:  0.5 mL packed red blood cells in metal free vial

Transport Temperature:  Refrigerated


Collection Instructions:  Centrifuge to separate plasma from RBC's and discard plasma. Transfer RBC's to a metal free plastic transfer vial.

Day(s) and Time(s) Performed

 Tues-Sat p.m.; Report available: 5 days

Useful For

Magnesium is an essential trace element. Deficiency leads to irritability, neuromuscular abnormalities, cardiac and renal damage. Its salts are used as antacids and cathartics. Excessive amount may cause CNS depression, loss of muscle tone, respiratory and cardiac arrest.

Computer interface code

PDM # 5900945