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← back to “Disorders of the Thyroid Gland in Infancy, Childhood and Adolescence”


Figure 15-3. Cord blood levels of T4, free T4, TBG, T3, reverse T3 and TSH in the human infant. Note the low T3 and high reverse T3 concentrations as well as the discrepancy between the total T4 and free T4 levels in very premature babies. (Redrawn from Williams et al (10). See text for details).