Electrolyte test: An electrolyte test or electrolyte panel

An electrolyte test or electrolyte panel is a blood test that helps to measure whether there is a deficit or imbalance of electrolytes in your body. An electrolyte test can also be done through a urine test. An electrolyte panel, also known as a serum electrolyte test, is a blood test that measures levels of the body's main electrolytes: Sodium, which helps control the amount of fluid in your body. Learn about the electrolytes test, a blood test that measures the levels of key electrolytes in the body, such as sodium, potassium, and calcium. Find out how to prepare for the test, what the normal ranges are, and how to interpret the results. An electrolyte test measures the amount of important electrolytes like sodium, chloride, potassium, and bicarbonate, present in body.