TPO and thyrotoxicosis: During hospitalization, thyrotoxicosis was also detected: thyroid stimulating hormone (TSH) 0.01 μIU/ml, free thyroxine (T4 free) 28.58 pmol/l, free triiodothyronine (T3 free) 6.54 pmol/l, antibodies (Ab) to thyroid peroxidase (TPO) 0.8 IU/ml (0–9.0), Ab to TSH receptor 0.45 IU/ml (0–1.75).