Get tested with Superpower

If you’ve been postponing blood testing for years or feel frustrated by doctor appointments and limited lab panels, you are not alone. Standard healthcare is often reactive, focusing on testing only after symptoms appear or leaving patients in the dark.

Superpower flips that approach. We give you full insight into your body with over 100 biomarkers, personalized action plans, long-term tracking, and answers to your questions, so you can stay ahead of any health issues.

With physician-reviewed results, CLIA-certified labs, and the option for at-home blood draws, Superpower is designed for people who want clarity, convenience, and real accountability - all in one place.

Key benefits of Magnesium testing

• Reveals your magnesium status, essential for muscle, nerve, and heart function.
• Spots low levels that may explain fatigue, cramps, or irregular heartbeat.
• Flags high levels in kidney disease or excessive supplement use.
• Guides treatment for muscle spasms, migraines, or heart rhythm problems.
• Tracks response to magnesium replacement or medication adjustments over time.
• Clarifies unexplained weakness, tremors, or numbness linked to electrolyte imbalance.
• Best interpreted with calcium, potassium, and your symptoms for full context.

What is Magnesium?

Magnesium is an essential mineral and the fourth most abundant positively charged ion (cation) in the human body. It cannot be made internally and must come from food or supplements. Most magnesium resides inside cells and bone, with only about 1% circulating in blood.

The spark plug of cellular energy

Magnesium acts as a cofactor for over 300 enzymes, meaning these proteins need magnesium to function. It plays a central role in energy production, helping convert food into usable fuel (ATP) inside mitochondria.

Master regulator of nerves and muscles

This mineral stabilizes electrical activity across cell membranes, controlling how nerves fire and muscles contract. It counterbalances calcium, promoting relaxation after contraction in both skeletal and heart muscle.

Builder of DNA and protein

Magnesium is required for synthesizing DNA, RNA, and proteins. It also supports bone structure, blood sugar control, and blood pressure regulation. Measuring blood magnesium reflects recent intake and availability, though it may not fully capture total body stores.

Why is Magnesium important?

Magnesium is a master regulator that powers more than 300 enzyme systems throughout your body, from energy production in every cell to the electrical stability of your heart, muscles, and nerves. It governs how your cells make ATP, how your muscles contract and relax, how your bones mineralize, and how your nervous system stays calm and coordinated. Without adequate magnesium, these fundamental processes begin to falter.

Your cells can't make energy without it

Normal serum magnesium typically ranges from 1.7 to 2.2 mg/dL, with optimal levels sitting comfortably in the middle to upper portion of that range. When magnesium drops below normal, muscles become irritable and prone to cramping, especially in the calves and feet. Fatigue deepens because mitochondria struggle to generate ATP. The heart may develop arrhythmias, blood pressure can rise, and anxiety or insomnia often emerge as the nervous system loses its biochemical brake.

Too much magnesium slows everything down

Elevated magnesium is uncommon but serious, usually reflecting kidney failure or excessive supplementation. High levels suppress nerve and muscle function, causing weakness, low blood pressure, slowed reflexes, and in severe cases, respiratory depression or cardiac arrest.

It connects metabolism, structure, and electrical balance

Magnesium links bone health, glucose metabolism, cardiovascular tone, and neurologic calm into a single integrated system. Chronic deficiency raises long-term risks for osteoporosis, type 2 diabetes, hypertension, and mood disorders, underscoring its role as a foundational mineral for resilience and vitality.

What do my Magnesium results mean?

Low magnesium levels

Low values usually reflect inadequate intake, poor absorption from the gut, or excessive loss through the kidneys. Magnesium is essential for energy production, nerve signaling, muscle relaxation, and blood sugar control. When levels drop, you may experience muscle cramps, fatigue, irregular heartbeats, or heightened stress responses. Chronic low magnesium is linked to insulin resistance, high blood pressure, and bone fragility. Certain medications like diuretics and proton pump inhibitors can accelerate magnesium depletion.

Optimal magnesium levels

Being in range suggests adequate cellular energy metabolism, stable neuromuscular function, and balanced electrolyte status. Magnesium supports hundreds of enzymatic reactions, including those that regulate heart rhythm, blood pressure, and glucose handling. Optimal levels tend to sit in the mid to upper portion of the reference range, reflecting robust tissue stores and efficient cellular uptake.

High magnesium levels

High values usually reflect impaired kidney function, as the kidneys are responsible for excreting excess magnesium. Elevated levels can also occur with overuse of magnesium-containing supplements, laxatives, or antacids. Very high magnesium can slow nerve and muscle activity, leading to weakness, low blood pressure, or irregular heart rhythms.

Factors that influence magnesium results

Serum magnesium represents only a small fraction of total body stores, so normal blood levels don't always rule out tissue deficiency. Results can be affected by kidney function, hydration status, and certain chronic illnesses.