Table 1.

Thyroid antibodies levels and thyroid function tests

Tests	Before teprotumumab therapy	After teprotumumab therapy	After plasmapheresis
TSI (0.00–0.55 IU/L)	1.04	1.06	0.35
TgAb (0–0.9 IU/mL)	<1.0	18.4	<1.0
TPO (0–34 IU/mL)	<6	14	<9
TRAb (<1.0 U/L)	1.6	1.2	<1.10
TSH (0.27–4.2 µIU/mL)	0.311	1.64	1.01
FT4 (0.93–1.7 ng/dL)	1.52	1.61	1.41
Total T3 (80–200 ng/dL)	104.7	93.7	86.1

FT4, free thyroxine; T3, triiodothyronine; TgAb, thyroglobulin antibody; TPO, thyroperoxidase antibody; TRAb, thyrotropin receptor antibody; TSH, thyrotropin; TSI, thyroid stimulating immunoglobulin.