Table 1.
TFTs at multiple time-points during the patient's illness
| Laboratory tests (normal ranges) | Dates of TFT |
||||
|---|---|---|---|---|---|
| May 12, 2020 | May 21, 2020 | May 28, 2020 | June 2, 2020 | June 8, 2020 | |
| TSH (0.7–4.20 mIU/L) | ↓0.018 | ↓<0.008 | ↓0.01 | ↓0.01 | ↓<0.01 |
| tT4 (59.34–154.8 nmol/L) | − | ↑222.91 | − | ↑305.73 | ↑268.32 |
| fT4 (11.61–23.22 pmol/L) | − | − | ↑60.63 | ↑63.21 | − |
| tT3 (1.232–3.08 nmol/L) | − | 2.60 | ↑3.39 | ↑4.10 | ↑3.37 |
| T3Up (32–48%) | 45.3% | − | − | − | − |
| TSI (0–0.55 IU/L) | − | − | <0.1 | − | − |
| TSHrAb (0–1.75 IU/L) | − | − | <1.10 | − | − |
| TPOAb (≤34.9 IU/mL) | − | − | − | ↑96.71 | − |
TSH, thyroid-stimulating hormone; TFT, thyroid function test; COVID-19, Coronavirus disease 2019; TPOAb, thyroperoxidase antibody; TSHrAb, TSH-receptor antibody; TSI, thyroid-stimulating immunoglobulin; T3Up, tri-iodothyronine uptake; tT4, total thyroxine; tT3, total tri-iodothyronine. Bolded values indicate abnormal laboratory test results.