Current methods to remove radioactive contaminants from the body (decorporation) include Saturation of the target organ (eg, potassium iodide [KI] for iodine isotopes) (see CDC: Potassium Iodide [KI]) Chelation at the site of entry or in body fluids followed by rapid excretion (eg, calcium or zinc diethylenetriamine penta-acetate [DTPA] for americium, californium, plutonium, and yttrium) (see CDC: DTPA) Acceleration of the metabolic cycle of the radionuclide by isotope dilution (eg, water for hydrogen-3) Precipitation of the radionuclide in the intestinal lumen followed by fecal excretion (eg, oral calcium or aluminum phosphate solutions for strontium-90) Ion exchange in the gastrointestinal tract (eg, Prussian blue for cesium-137, rubidium-82, thallium-201) (see CDC: Prussian Blue) Because a serious nuclear power reactor accident that releases fission products into the environment could expose large groups of people to radioiodine, decorporation using oral potassium iodide has been studied in great detail.