What is the reference range for Serum Magnesium?

The standard reference range for Serum Magnesium is Approximately 1.7–2.3 mg/dL (0.70–0.95 mmol/L).. Reference ranges vary by laboratory and assay platform — interpret in context of the issuing laboratory's stated range.

Which tests measure Serum Magnesium?

Serum Magnesium is measured in 1 test on BiomarkersLabs.com, including ADHD Ultimate Panel.

Biomarker Reference · Mg

What does the Serum Magnesium test measure?

Serum Magnesium (Mg) is a clinical biomarker used in comprehensive-panels assessment. Magnesium is the second most abundant intracellular cation and serves as a cofactor for enzymes regulating energy production, protein synthesis, and neurotransmitter release. It is measured in 1 laboratory test on BiomarkersLabs.com.

Reference Range: Approximately 1.7–2.3 mg/dL (0.70–0.95 mmol/L).
Units: mg/dL, mmol/L
Measured In: 1 test
Category: —

Functional medicine optimalSome functional sources suggest ≥2.0 mg/dL, but serum levels correlate poorly with intracellular stores, and the clinical validity of serum-based 'optimal' ranges is contested.

What is Serum Magnesium?

Magnesium is the second most abundant intracellular cation and serves as a cofactor for enzymes regulating energy production, protein synthesis, and neurotransmitter release. It modulates NMDA receptor activity, influences GABAergic and dopaminergic pathways, and stabilises neuronal membranes. Serum magnesium reflects less than 1% of total-body stores, so deficiency can exist despite normal serum concentrations.

Why is Serum Magnesium measured?

Magnesium deficiency has been linked to irritability, attention difficulties, and hyperactivity in children, and supplementation is commonly recommended in integrative ADHD protocols. However, serum magnesium is an insensitive marker of tissue status, and the evidence base for benefit in ADHD remains limited.

Reference ranges

Standard reference: Approximately 1.7–2.3 mg/dL (0.70–0.95 mmol/L).
Functional medicine optimal: Some functional sources suggest ≥2.0 mg/dL, but serum levels correlate poorly with intracellular stores, and the clinical validity of serum-based 'optimal' ranges is contested.
Units: mg/dL, mmol/L

Reference ranges vary by laboratory and assay platform. Interpret in context of the issuing laboratory's stated range.

Tests that measure Serum Magnesium

1 test on BiomarkersLabs.com include this biomarker.

BML-CHP-021Comprehensive

ADHD Ultimate Panel

Serum Magnesium reference range in this test: Approximately 1.7–2.3 mg/dL (0.70–0.95 mmol/L).

Related clinical conditions

Related Biomarkers

Frequently measured alongside

Serum ZincZn1 test Serum CopperCu1 test Serum FerritinFerritin1 test 25-Hydroxyvitamin D25(OH)D2 tests Omega-3 IndexO3I1 test HomocysteineHcy5 tests High-Sensitivity C-Reactive Proteinhs-CRP1 test Thyroid-Stimulating HormoneTSH1 test

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