This formula is not exact: It assumes the current density is totally uniform in the conductor, which is not always true in practical situations. However, this formula still provides a good approximation for long thin conductors such as wires.
Deferasirox is used in the treatment of transfusional iron overload in people with thalassemia. Chelation therapy is used as a treatment for metal poisoning, including acute mercury, iron (including in cases of thalassemia), arsenic, lead, uranium, plutonium and other forms of toxic metal poisoning.
Copper toxicity that causes complications such as hemolytic anemia, anuria, or hepatotoxicity is also treated with chelation therapy with one of the following: 1  Oral penicillamine 250 mg q 6 h to 750 mg q 12 h (1000 to 1500 mg/day in 2 to 4 doses) 2  Dimercaprol 3 to 5 mg/kg IM q 4 h for 2 days, then q 4 to 6 h)