HIGH FREE THYROXINE (FT4) TEST RESULT REFERENT VALUES FOR CHILDREN. What does upper free thyroxine (FT4) test result referent values level mean for children?

Upper limit of normal free thyroxine (FT4) test result referent values for children is 2.0 (ng/dl) - 26 (pmol/L).

The differences in hormone levels between prepubertal and pubertal subjects, different pubertal stages should be included in the standard reference values of these hormones.

T4 treatment was associated with better 5-year outcome in infants <29 weeks' gestation, but with worse outcome in infants of 29 weeks. These effects could be related to low, respectively high free thyroxine (FT4) levels