Reference Ranges
Clinical Reference
1.7 – 2.2 mg/dL
Optimal Range
1.9 – 2.1 mg/dL
Critical Range
< 1.2
/
> 3.0
mg/dL
Serum sample; RBC magnesium is more sensitive
Related Conditions
Magnesium Deficiency
Low
Muscle Cramps
Low
Insulin Resistance
Low
Food & Lifestyle Recommendations
🍎 Food
Eat magnesium-rich foods daily: pumpkin seeds, almonds, spinach, dark chocolate, black beans
Food-first approach to magnesium
Evidence-Backed Supplements
When Low
-
Highly bioavailable form; raises serum Mg
Magnesium glycinate 300–400 mg/day Evening -
Bioavailable and mild laxative effect
Magnesium citrate 200–400 mg/day Any -
General magnesium supplementation raises serum Mg
Any form 300–400 mg/day Any
Questions to Ask Your Doctor
- Serum Mg is late to drop — should we check RBC Mg for a better picture? RBC Mg is more sensitive
Upload your blood test to see how your Magnesium (Serum) compares to reference and optimal ranges.
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