Magnesium RBC blood tests may be used to measure magnesium deficiency. This test can provide an earlier indication of magnesium deficiency as it measures intracellular magnesium levels. Magnesium is a mineral that is important for strong bones and muscles, energy production and nerve function. Magnesium blood testing may be used to evaluate kidney problems, uncontrolled diabetes or gastrointestinal concerns. The Magnesium RBC test may also be useful in assisting in the diagnosis for problems with calcium, potassium, or phosphorus. Turnaround time for Magnesium RBC blood tests is typically 1-3 business days.
Magnesium blood testing does not have any special requirements.