What This Value Measures
Potassium is a mineral (electrolyte) that is important for the function of muscles and the heart. Even small deviations can be significant.
Elevated Value
An elevated value can affect heart activity and may occur, among other things, with impaired kidney function.
Low Value
A decreased value can lead to muscle weakness and may be caused, for example, by fluid loss or medications.
Note: Delayed or incorrect blood sampling can cause the value to appear elevated.
Reference ranges are typical guide values for adults and vary depending on the laboratory, measurement method, age and sex — always compare with the range stated on your own report. A value outside the range does not automatically mean an illness, and a value within the range does not rule one out. The trend and overall picture are usually more informative than a single value. The doctor's assessment is always decisive.