80% of all calcium is bound to albumin in circulation. However, the biologically active form of calcium is the free, or ionized form, which is occasionally ordered as a separate test. Typically, a total serum calcium level should be…
Potassium is the major INTRACELLULAR cation in the body. Remember that sodium is primarily outside of the cell. Well, potassium finds its home at higher concentrations within cells throughout the body. Along with sodium, it regulates intracellular volume, plays…
Sodium is the primary extracellular cation in the body. It regulates osmotic forces, it is involved in membrane transport systems, it helps regulate many chemical reactions as well as aid in acid-base balance. The picture shown here is of…