Treatment Choice - Treatment Choice | Compare Prices | Find Hospital | An electrolyte test can help determine whether there's an electrolyte imbalance.<br/>Electrolytes are salts and minerals found in the blood, such as sodium, potassium, chloride and bicarbonate, which can conduct electrical impulses in the body.<br/>The test is sometimes carried out during a routine physical examination, or it may be used as part of a more comprehensive set of tests.