asmi
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How would you differentiate factitious hyperthyroidism from Grave's disease (according to thyroid function tests)?
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| dr_ashishg
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It is a good question. I guess you could look for antibodies to thyroid in grave's disease, they should be absent in facticitious disorder. Am i right..
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| asmi
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Common to both Grave's and factitious Hyperthyroidism is :Serum T4 increased ; Decreased TSH; Increased T 4 BR; Increased F T 4 I.
The only difference is that grave's shows increased uptake of I 131 whereas factitious hyperthyroidism shows decreased uptake of I 131.
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