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How does a radioactive iodine uptake test diagnose thyroid disorders?

During a radioactive iodine uptake test, your doctor will inject a small amount of radioactive iodine into your body. Later, he or she can measure the amount of radioactive iodine in your thyroid. This determines the level of hormones your thyroid is producing.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.