Radnostix

Radnostix, Inc. (formerly International Isotopes Inc.) is a diversified radioisotope, radiopharmaceutical, and medical device company based in Idaho Falls, Idaho. Founded in 1995, the company manufactures and distributes a wide range of nuclear medicine products, including generic sodium iodide I-131 for hyperthyroidism and thyroid cancer, calibration and reference standards under its RadQual brand, and Cobalt-60 sealed sources. Radnostix also develops and distributes medical devices and equipment, such as the LARA System for monitoring radiopharmaceutical administration, the EasyFill Automated Capsule System, and RadVent respiratory products. The company operates a vertically integrated manufacturing platform with FDA-registered and NRC-licensed facilities, serving hospitals, radiopharmacies, and research institutions globally.