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Different test responders used to monitor the dose of ATDs in pregnancy. FT4 = Free T4; FT3 = free T3; TSH = thyroid-stimulating hormone; TT3 = total T3; TT4 = total T4. * Twelve different test combinations (various combinations of TSH, FT4, FT3, TT4, TT3, T4 uptake and TRAb).
