Ba gratis tiroksin (ft4) valè refèr rezilta tès pou ansent fi. What does lower free thyroxine (FT4) test result referent values level mean for pregnant female?

Lower limit of normal free thyroxine (FT4) test result referent values for pregnant female is 0.5 (ng/dl) - 6.5 (pmol/L).

Low maternal free thyroxine concentrations during early pregnancy are associated with impaired psychomotor development in infancy.

Maternal thyroid function during early pregnancy is an important determinant of early fetal brain development because the fetal thyroid is unable to produce any T4 before 12-14 weeks' gestation.