Popquiz
Question: What endocrine gland produces ferritin?
Answer: None.
That was a trick question. Ferritin is not a hormone, but someone should tell that to the doctor who referred a 75 year old man to me who had to drive 2 hours for the consult. As it turns out he's iron-deficient from something else, suspicious for an occult lower GI malignancy.
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