. Author manuscript; available in PMC: 2013 Jan 27.

Published in final edited form as: Clin Pediatr (Phila). 2011 Jun 23;50(11):1040–1044. doi: 10.1177/0009922811412583

Table 1.

Case 1: Thyroid Function Test Profile and Management

Age (Years)	TSH (μU/mL)	T4 (μg/dL)	F T4 (ng/dL)	T3 (ng/dL)	Treatment

	Normal = 0.3-5.0	Normal = 5.5-12.3	Normal = 0.6-1.6	Normal = 30-160
5.25	>100	3.3			Thyroxin 25 μg/d and gradually adjusted to 88 μg/d
5.5	<0.03	15.8	1.99	224	Off treatment
6.2	0.86		1.27		Off treatment
6.8	<0.01		3.1		Started MTZ 0.7 mg/kg/d
6.9	12.6		0.91		Reduced MTZ dose to 0.4 mg/kg/d. Recommended thyridectomy

Abbreviations: TSH, thyroid-stimulating hormone; MTZ, methimazole.