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. 2021 Oct 18;10(11):1455–1462. doi: 10.1530/EC-21-0362

Table 4.

Abnormal TFT parameters and their association with severity of COVID-19.

Parameter Mild disease Severe disease P value
Low FT3 (n = 236) 33 (16.5%) 23 (63.9%) <0.001
Low TSH (n = 235) 5/199 (2.5%) 4/36 (11.1%) 0.033
High TSH (n = 235) 13 (6.5%) 2/36 (5.6%) 0.825

FT3, free T3; TFT, thyroid function tests; TSH, thyroid-stimulating hormone.