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Electrolytes

Magnesium

A mineral needed by several hundred enzyme reactions, and by the machinery that keeps potassium inside cells.

Unit mg/dLTypical adult range 1.7–2.2 mg/dL
What it is

A mineral needed by several hundred enzyme reactions, and by the machinery that keeps potassium inside cells.

Why it matters

Low magnesium makes low potassium and low calcium impossible to correct, so it is the value to check when neither will come up.

Reading the number

Under one percent of your magnesium is in the blood, so a normal serum value does not rule out depleted stores. Read it whenever potassium or calcium is stubbornly low.

What moves it
diureticsstomach acid blockersalcoholdiarrhoeakidney function
Read alongside
PotassiumCalciumPhosphateVitamin B1 (thiamine)
When to raise it

Worth discussing a low value, particularly with cramps or palpitations.

Tracking only, not a diagnosis. The range above is a typical adult reference range — the range printed by the lab that ran your test is the one that applies to you. Discuss anything that concerns you with your doctor.

Also known as

On a report in another language.

A lab report names this analyte in its own language. Vitals Vault recognises each of these and files them all under Magnesium.

MagnésioMagneesiumMagnesio

Track your magnesium over time.

Magnesium is one of 165 analytes Vitals Vault charts over time. Import a lab report in any language and this number lands on a timeline only you can read.

Continue with Google
Tracking only. This app is not medical advice. Always discuss results and future analysis with your doctor.

Catalog entry last updated 2026-08-27. Browse all 165 metrics.