openalexFrontiers in Endocrinology2026-07-23
A preconception to late pregnancy community cohort study for reference values of serum thyrotropin and total thyroxine
Ashwin Valliyot, P. K. Jabbar, Sreejith U. S. Babu, Jayakumari Chellamma, Abilash Nair, Madan Godbole, et al.
Introduction Population-based preconception cohort studies to establish reference ranges for thyroid function tests during pregnancy are scarce. This study was done to establish the reference values for thyrotropin (TSH) and total thyroxine (T4) during the first and late-second t…