Red Cell Magnesium
Magnesium is a vital mineral involved in over 300 enzymatic reactions in the body, including energy production, muscle and nerve function, and bone formation. While standard serum magnesium tests measure extracellular levels, the Red Cell Magnesium Test assesses the concentration of magnesium within red blood cells (RBCs), providing a more accurate reflection of the body's magnesium stores.
Test details
Sample type
Blood
Time of day
No specific time required
Fasting required
No
Results timeframe
Within 7 days
Preparation
No special preparation required
What's measured in this test
Magnesium Red Cell
Measures magnesium inside red blood cells.
Common reasons for testing
- Assessing magnesium deficiency – Especially when symptoms persist despite normal serum magnesium levels.
- Evaluating chronic conditions – Such as malnutrition, alcoholism, or gastrointestinal disorders that may lead to intracellular magnesium depletion.
- Monitoring supplementation – To ensure effective absorption and utilization of magnesium therapy.