Clinical Thyrotoxicosis Resulting from Liothyronine Augmentation of Antidepressant Therapy in an Adolescent

Table 1

Laboratory values before and after discontinuing liothyronine therapy.

Laboratory value (reference range)	At initial presentation	Subsequent work-up	3 months after discontinuation of liothyronine
TSH (0.34-5.60 μIU/mL)	0.02		2.92
Free T4 (0.58-1.20 ng/dL)	0.35		0.76
Total T3 (87-188 ng/dL)		466	127
Sodium (136-144 mmol/L)	141
Potassium (3.6-5.1 mmol/L)	4.2
Calcium (8.5-10.1 mg/dL)	9.9
C-reactive protein (0.0-10.0 mg/L)	<0.2