Blood irradiation indicator

Blood irradiation indicators are small, single-use labels designed to be affixed to blood bags before exposure to ionizing radiation. Their purpose is to confirm the type of radiation (e.g., gamma or X-ray) applied and verify the dosage delivered, ensuring proper inactivation of donor lymphocytes to reduce transfusion risks like graft-versus-host disease.

These indicators typically feature a permanent color-change mechanism to visually confirm radiation exposure and dosage. They are regulated as single-use medical devices, often classified based on their role in ensuring safety and traceability in blood processing workflows, though classification varies by jurisdiction.