Figure 3.

Alterations in thyroid function post COVID-19 infection.
Thyroid function of patients in two groups, (A) HT group and (B) non-HT group was compared to identify alterations before.
Abbreviations: D30 and D90. PRE, prior to COVID-19 infection; D30, within 30 days after COVID-19 infection; D90, within 90 days after COVID-19 infection; TSH, thyroid-stimulating hormone; FT3, free triiodothyronine; FT4, free thyroxine; TT3, total triiodothyronine; TT4, total thyroxine; Tg, thyroglobulin; TgAb, thyroglobulin antibody; TPOAb, thyroid peroxidase antibody. Significance indicated by the asterisks (p value: *, < 0.05; **, < 0.01; ***, < 0.001.)