The prostate is a zinc accumulating, citrate producing organ.

Kaatialaite (Fe(H2AsO4)3 5H2O) is a ferric arsenate mineral found in Finland.

For an accurate measurement, the proportion of blood to citrate needs to be fixed many laboratories will not perform the assay if the tube is underfilled and contains a relatively high concentration of citrate.

Iron(III) sulfate (or ferric sulfate), is the chemical compound with the formula Fe2(SO4)3, the sulfate of trivalent iron.

Citrate is in liquid form in the tube and is used for coagulation tests, as well as in blood transfusion bags.

Outside of red blood cells, good ferrous iron the only oxygen carrying form is oxidized uncontrollably to form the bad ferric and ugly ferryl forms of hemoglobin.

The most sensitive targets of NO are aconitase, an enzyme that catalyzes the isomerization of citrate to isocitrate in the citric acid cycle, and cytochrome oxidase, the last enzyme in the respiratory electron transport chain of mitochondria.