Calcium chelation in blood coagulation pathway

"Calcium chelation in blood coagulation pathway" does not refer to a specific molecule or receptor but rather describes a **chemical process** where agents such as citrate or EDTA bind and sequester free calcium ions in the blood. **Calcium ions are essential cofactors for multiple steps in the enzymatic cascade that leads to clot formation**; their removal by chelating agents prevents activation of several key clotting factors and thus inhibits coagulation[1][3][4]. This principle is widely used in laboratory settings—blood collection tubes often contain citrate to prevent clotting by binding all available calcium until testing is performed, at which point calcium can be reintroduced to initiate clotting for analysis[4]. Clinically, intravenous administration of EDTA has been explored as "chelation therapy," primarily for cardiovascular conditions, though its efficacy remains controversial and it carries risks such as hypocalcemia if not carefully managed[2]. Because this entry refers to a **process** rather than an individual molecular target (such as an enzyme or receptor), it should not be considered a canonical drug target. The correct approach would be to reference specific molecules involved in this process—such as "calcium ion" or "coagulation factor X"—rather than the general concept of "calcium chelation."

Other names

Calcium chelationCalcium ion chelationChelation therapy (in context of coagulation)

Chelation of calcium ions to inhibit the coagulation cascade[1][4][2]