Sodium (Na):- Sodium plays a key role in your body. It helps maintain normal blood pressure, supports the work of your nerves and muscles, and regulates your bodys fluid balance. A normal blood sodium level is between 135 and 145 milliequivalents per liter (mEq/L). Potassium (K):-Its main role in the body is to help maintain normal levels of fluid inside our cells. Sodium, its counterpart, maintains normal fluid levels outside of cells. Potassium also helps muscles to contract and supports normal blood pressure. Chloride (Cl):-Chloride is an important electrolyte that is responsible for maintaining the acid-base (pH) balance in your body, regulating fluids, and transmitting nerve impulses. The normal range for chloride in adults is roughly between 98 and 107 milliequivalents of chloride per liter of blood (mEq/L).