Table 2. Clinical and laboratory follow-up of the newborn.

Age	0	4 d	7 d	10 d	13 d	17 d	20 d	22 d	1 mo 5 d	1 mo 17 d	2 mo 5 d	2 mo 11 d	2 mo 25 d
GA						36 + 3			38 + 5	3 d	19 d	25 d	1 mo 9 d
Weight (g)	2,660	2,130	2,090	2,205	2,270	2,345	2,390	2,380	3,100	3,510	4,040
Height (cm)	47.5									53.5	55
TSH (mUI/mL)	0.027		<0.015					15	<0.01	<0.01	0.33	629	<0.01
FT4 (ng/dL)	5.59	6.37	5.07	3.63	3.22	3.48	3.03	2.27	1.0	0.7	0.4	0.54	1.7
T3 (ng/m L)	3.54	2.88	3.32	3.89	4.1		3.6		2.0	1.1	0.9	129 ng/dL
TRabs (UI/L)		9.187					6.88					0.19
Therapy	Methimazole 0.5–0.5 mg (0.38 mg/kg/d) Propranolol 2–2 mg (1.5 mg/kg/d)	↓Propranolol 1–1 mg due to bradycardia, start of ursodiol and vitamin E	↑Methimazole 1–0.5 mg (0.7 mg/kg/d) Propranolol 2–2 mg			↑Methimazole 1–1 mg (0.83 mg/kg/d) Propranolol 2–2 (1.67 mg/kg/d)		Propranolol suspension, Ursodiol 25 mg c/8 h (20 mg/kg/d)	↓Methimazole 1–0.5 mg (0.48 mg/kg/d), ursodiol, vitamin E suspension	↓Methimazole 0.5–0.5 mg (0.28 mg/kg/d)	Methimazole suspension	LVT 25 µg (6 µg/kg/d)	LVT suspension

Abbreviations: FT4, free thyroxine; GA, gestational age; LVT, levothyroxine; T3, triiodothyronine; TRAbs, thyrotropin receptor antibodies; TSH, thyroid-stimulating hormone.

Note: References values: TRAbs (NR <1.5), LVT (0.78–2.19), T3 (0.97–1.7), and TSH (0.9–7.7).