automated plasma electrolyte analysis automated plasma magnesium test 2022-03-08T11:19:58Z MMO:0000810 PMID:32084371 This is a method using a device designed to follow a predetermined sequence of individual operations repeatedly and essentially without external influence or control to measure the amount of magnesium in blood plasma, the fluid portion of the blood remaining after cells and platelets are removed. Magnesium is a cofactor in more than 300 enzyme systems that regulate diverse biochemical reactions in the body. measurement_method_ontology slaulede