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Increased Serum Ferritin Levels in Hyperthyroidism

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Grant support: in part by RIA Reference Laboratory, and by the American University Hospital of Beirut, Lebanon.

▸Requests for reprints should be addressed to Chamel Macaron, M.D.; Department of Medicine, American University Hospital; Beirut, Lebanon.

American University of Beirut, Beirut, Lebanon; and Tel-Chiha Hospital, Zahle, Lebanon

Ann Intern Med. 1982;96(5):617-618. doi:10.7326/0003-4819-96-5-617
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Ferritin levels represent a good index of iron stores in the body. Sensitive radioimmunoassays have shown the clinical usefulness of ferritin measurement in the early diagnosis and management of iron deficiency and iron-overload states (1). However, liver disease, malignancies, hematopoietic disease, rheumatoid arthritis, fever, and inflammation can also increase serum ferritin concentration independently of changes in iron stores (2). We studied serum ferritin levels in patients with hyperthyroidism.

Twenty-three hyperthyroid patients (15 women and eight men) were randomly selected. They were grouped according to sex and age because of the known difference in serum ferritin levels due to these two


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