Brenton D P, Gordon T E
Br J Hosp Med. 1984 Aug;32(2):60, 64-6, 68-9.
Magnesium is the second most abundant intracellular cation but it is still not measured often enough. It is closely linked with other electrolytes such as calcium, potassium, and phosphate so that the correct clinical interpretation of abnormal results can be complex.