Micronutrient, Magnesium, RBC
Test Code
Clinical Significance
Micronutrient, Magnesium, RBC - 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.
Test Resources
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Test Details
Methodology
Reference Range(s)
| ≥18 years | 4.0-6.4 mg/dL |
Preferred Specimen(s)
0.5 mL packed red blood cells collected in an EDTA (lavender-top or royal blue-top) tube
Alternative Specimen(s)
1 mL whole blood collected in: EDTA (royal blue-top) tube or EDTA (lavender-top) tube
Minimum Volume
0.2 mL packed red blood cells • 0.5 mL whole blood
Collection Instructions
Patients should be 18 years of age or greater.
Centrifuge to separate plasma from RBC's and discard plasma. Transfer RBC's to a plastic transfer vial from a Quest Diagnostics (trace element and metal-free) collection kit or transfer to a transport tube.
Transport Container
Trace element and metal-free transport tube
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
- Packed red blood cells
Room temperature: 30 days
Refrigerated: 30 days
Frozen: 30 days
Whole blood
Room temperature: 4 days
Refrigerated: 7 days
Frozen: Unacceptable
Setup Schedule
Centrifuge to separate plasma from RBC's and discard plasma. Transfer RBC's to a plastic transfer vial from a Quest Diagnostics (trace element and metal-free) collection kit or transfer to a transport tube.
Room temperature: 30 days
Refrigerated: 30 days
Frozen: 30 days
Whole blood
Room temperature: 4 days
Refrigerated: 7 days
Frozen: Unacceptable