Back to all biomarkers
Nutritional
Magnesium (RBC)
Red blood cell magnesium — a more accurate measure of magnesium status than serum magnesium.
Optimal Range
5.0-6.5 mg/dL (optimal)
Why It Matters
Magnesium is involved in 300+ enzymatic reactions including DNA repair, energy production, and muscle function. Deficiency is widespread and linked to hypertension, arrhythmias, insulin resistance, and accelerated aging.