POTASSIUM TEST

A potassium blood test measures the amount of potassium in your blood. Potassium is a type of electrolyte. Electrolytes are electrically charged minerals that help control fluid levels and the balance of acids and bases (pH balance) in your body. They also help control muscle and nerve activity and perform other important functions. Your cells, nerves, heart, and muscles need potassium to work properly. Potassium levels that are too high or too low may be a sign of a medical problem. Other names: potassium serum, serum potassium, serum electrolytes, K