Electrolytes are the charged molecules that are present in the body fluids, urine, and blood. Kidneys help to balance the electrolytes in the body by absorption of water and excretion and absorption of the extra amount of ions so kidneys help to maintain the balance of water and electrolytes. Sodium, calcium, and potassium are the electrolytes and we get them from food.
The electrolytes increase the solute concentration in the body which increases the water absorption in the body and prevents the body from dehydration so water helps to maintain the electrolyte balance in the body. If electrolyte increases then water requirement increases and if electrolyte decreases then water requirement decrease.
Electrolytes are very important to function, the excretion and absorption of specific ions are important for the body to function properly, calcium is very important in the movement of muscles and gives strength to the bones. The imbalance in the ions causes weakness. The pumping of the heart means the heartbeat also depends upon the electrolyte balance.
A blood test has been done to test the electrolytes because the electrolytes are present in the blood in the various organs. The function of the kidneys is also determined by using this test because kidneys play a major role in electrolyte balance and doctors can prescribe certain other tests as well.