Functional class
Func. class.: Antithyroid
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Drug reference
Func. class.: Antithyroid
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Chem. class.: Radiopharmaceutical
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USES: High dose: Thyroid cancer, hyperthyroidism Low dose: Visualization to determine thy- roid cancer, diagnostic aid for thyroid function studies
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CONTRAINDICATIONS: Preg- nancy, breastfeeding, age <30 yr, recent MI, large nodular goiter, vomiting/diar- rhea, acute hyperthyroidism, use of thy- roid products
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DOSAGE AND ROUTES Thyroid cancer • Adult: PO 50-150 mCi; may repeat, depending on clinical status Hyperthyroidism • Adult: PO 4-10 mCi, depending on serum thyroxine level
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Available forms: Capsule 0.75-100 mCi; oral solution 5-150 mCi/vial; concen- trated oral solution 1000 mCi/mL; all are set at calibration
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• Adult: PO 50-150 mCi; may repeat, depending on clinical status Hyperthyroidism
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• Adult: PO 4-10 mCi, depending on serum thyroxine level
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