Template:Maternal Thyroid Function table

From Embryology
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Maternal Thyroid Function
Pregnancy Time Thyrotropin (TSH) mIU/L Free Thyroxine (FT4) pmol/L
9-12 weeks 0.18 - 2.99 11 - 19.2
second trimester 0.11 - 3.98 10.5 - 18.2
third trimester 0.48 - 4.71 9.0 - 16.1
Total T4 (TT4) reference interval after 19 weeks GA was 77 - 186 nmol/L.

Data[1] - 95th percentile reference

  1. Donovan LE, Metcalfe A, Chin AC, Yamamoto JM, Virtanen H, Johnson JA & Krause R. (2018). A Practical Approach for the Verification and Determination of Site and Trimester Specific Reference Intervals for Thyroid Function Tests in Pregnancy. Thyroid , , . PMID: 30595114 DOI.