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Potassium Normal Range
Category: Kidney Function TestsAlso known as: k+, serum potassium
What does it measure?
Potassium measures an electrolyte essential for heart and muscle function.
Reference Range
3.5 - 5.1
mEq/L
Note: Reference ranges can vary slightly between different laboratories. Always refer to the range printed on your specific lab report.
Critical Values
Values below 2.5 mEq/L or values above 6.5 mEq/L are considered critical and require immediate medical attention.
Frequently Asked Questions
What is a normal Potassium level?
A normal Potassium level for most adults is 3.5–5.1 mEq/L. This is a general reference range, and your specific laboratory may use slightly different values.
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