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2630 pages added, reviewed or updated during the last month (last updated: 17/4/2021)


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thyroxine

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Plasma thyroxine ranges between 70-150 nomol per litre and may be measured by radioimmunoassay. It is a very good screening test for primary hypothyroidism where it is lowered. It is elevated in hyperthyroidism.

Last reviewed 01/2018

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