What is essential for a nurse to check before administering radioactive iodine?

Prior to administering radioactive iodine, it is essential to confirm the client's pregnancy status with a valid test. Radioactive iodine is commonly used to treat conditions such as hyperthyroidism and thyroid cancer, but it poses significant risks to a developing fetus. If a pregnant individual receives radioactive iodine, it may harm the fetus, leading to developmental issues or thyroid dysfunction. Therefore, confirming that the client is not pregnant is a crucial step in ensuring patient safety.

While understanding a client's knowledge of thyroid disease, their last menstrual cycle, and any allergies are important components of overall patient assessment and care, they do not carry the same level of immediate risk as pregnancy status when dealing with radioactive materials. Prioritizing pregnancy testing helps prevent potential teratogenic effects and ensures compliance with safety protocols when administering treatment that involves ionizing radiation.