Electrolytes play a crucial role in maintaining proper body fluid balance and ensuring the normal functioning of cells and organs. These charged particles, including sodium, calcium, potassium, chlorides, and bicarbonates, are essential for various physiological processes such as nerve conduction, muscle contraction, and pH regulation. Understanding the distribution and balance of electrolytes within the body is vital for overall health. In this article, we will explore the importance of electrolytes, their distribution in body fluids, and the determination of key electrolytes in maintaining proper physiological function.