Establishment of assay method- and trimester-specific reference intervals for thyroid hormones during pregnancy in Chengdu, China.

J Clin Lab Anal · 2021 · PMC8128292 · PMID 33942380

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a clear trendno p-value reported

This study confirmed a clear trend of increasing TSH from the first trimester to the third trimester in pregnant women. 28 FT4 and FT3 levels also change during the three trimesters of pregnancy because of the change in TSH.

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