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Magnesium RBC details

What Magnesium RBC shows

This test measures magnesium stored inside red blood cells rather than freely circulating in your blood serum, which many practitioners consider a more accurate reflection of your body's true magnesium status, since standard serum magnesium represents only a small fraction of total body magnesium and can appear normal even when tissue levels are actually depleted. It's used similarly to serum magnesium โ€” to help evaluate symptoms like muscle cramps, fatigue, or heart rhythm concerns that could relate to magnesium deficiency.

Tests that include Magnesium RBC

Labcorp Not offered
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