Table 3.

Thyroid function tests according to severity of COVID-19

	WHO Criteria	MoHFW Criteria
Thyroid stimulating hormone (mIU/L)
Asymptomatic	3.4±4.4 (2.5-4.2)	3.4±4.4 (2.5-4.2)
Mild	4.7±11.4 (2.0-7.5)	4.7±11.4 (2.0-7.5)
Moderate	2.8±2.0 (1.9-3.6)	2.8±2.0 (1.9-3.6)
Severe	2.0±1.4 (1.3-2.6)	2.1±2.3 (1.2-2.9)
Critical	2.3±3.7 (-0.3-4.9)	-
P*	0.004	0.002
Free thyroxin (pmol/L)
Asymptomatic	14.2±3.9 (12.9-14.2)	14.2±3.9 (12.9-14.2)
Mild	14.2±2.6 (14.2-15.4)	14.2±2.6 (14.2-15.4)
Moderate	16.7±5.1 (14.2-18.0)	16.7±5.1 (14.2-18.0)
Severe	15.4±2.6 (14.2-16.7)	15.4±3.9 (12.9-16.7)
Critical	15.4±5.1 (11.6-20.6)	-
P*	0.003	0.002
Free tri-iodothyronine (pmol/L)
Asymptomatic	4.0±0.9 (3.8-4.1)	4.0±0.9 (3.8-4.1)
Mild	4.0±0.8 (3.7-4.1)	4.0±0.8 (3.7-4.1)
Moderate	3.4±0.8 (3.1-3.7)	3.4±0.8 (3.1-3.7)
Severe	3.1±0.8 (2.8-3.4)	2.9±1.1 (2.6-3.4)
Critical	2.8±1.4 (1.7-3.8)	-
P*	<0.0001	<0.0001

Krushal Wallis test. WHO-World Health Organization, MoHFW- Ministry of Health & Family Welfare