Serum magnesium

Magnesium is one of the most abundant cations in the body. Adults have 0.823 to 1.234 mol of magnesium, 50% of which is in bones, 45% is in intracellular fluid, and extracellular fluid accounts for 5%. Liver, kidney, and muscle contain more magnesium, and the content of magnesium in the liquid is second only to potassium, and its concentration is about 10 times that of extracellular fluid. In the extracellular fluid, the content of magnesium ranks fourth after sodium, potassium, and calcium. Magnesium participates in reactions and plays an important role in many physiological and chemical processes, such as activators of various enzymes. Alkaline and acid phosphatase, phosphomutase, pyrophosphatase, creatine kinase, hexokinase, leucine aminopeptidase, and carboxylase, etc., all must be activated by magnesium ions for their catalysis; magnesium is also It is an essential element for the structure of DNA, RNA and ribosome macromolecules; it is also an important element for maintaining normal nerve function and muscle.