Potassium (K⁺)
Essential for heart rhythm and muscle contraction. Even small deviations can be dangerous.
Typical normal range
3.5–5.0 mEq/L
If high ↑
Hyperkalemia: kidney failure, ACE inhibitors, Addison's disease — cardiac risk
If low ↓
Hypokalemia: cardiac arrhythmia risk, diuretic use, vomiting, diarrhea
What is a normal Potassium level?
A typical reference range is 3.5–5.0 mEq/L. Ranges vary between laboratories and can depend on age and sex, so compare your result with the range printed on your own report.
What does a high Potassium level mean?
Hyperkalemia: kidney failure, ACE inhibitors, Addison's disease — cardiac risk. A single result rarely gives a diagnosis on its own; your doctor will interpret it alongside your symptoms and other tests.
What does a low Potassium level mean?
Hypokalemia: cardiac arrhythmia risk, diuretic use, vomiting, diarrhea. Your doctor will interpret it alongside your symptoms and other tests.
About the Metabolic Panel
A metabolic panel checks blood sugar, electrolytes and kidney function. It gives a broad picture of how your body handles energy and balances fluids.
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Medical disclaimer: Reference ranges vary by laboratory, age, sex, and clinical context. This page is for educational purposes only and is not a diagnosis. Always discuss your results with a qualified healthcare professional.