Acute Flaccid Tetraparesis after COVID-19 Infection: Think of the Thyroid

Table 1

Initial investigations

Test	Result		Reference
Urea	6.1	mmol/L	2.8–7.7
Sodium	141	mmol/L	135–145
Potassium	1.7 ↓	mmol/L	3.5–5.3
Chloride	106	mmol/L	96–108
Glucose	6.2	mmol/L
Creatinine	43	Umol/L	65–125
Magnesium	0.69	mmol/L	0.65–0.95
Calcium	2.36	mmol/L	2.1–2.6
Phosphate	0.57 ↓	mmol/L	0.65–1.65
FT4	28.96 ↑	pmol/L	10–20
TSH	<0.004 ↓	mIU/L	0.4–4
FT3	17.74 ↑	pmol/L	2.5–5
TSH receptor antibody	2.4 ↑	U/L	<2
Haemoglobin	14.4	g/dL	13–17
White blood cells	13.5	×10^3/uL	4–10
Platelets	310	×10^3/uL	150–450
Bilirubin	13.4	Umol/L	5–30
Alkaline phosphatase	114	U/L	32–103
Gamma-glutamyl transferase	37	U/L	5–50
Alanine transaminase	41	U/L	10–55
Aspartate transaminase	24	U/L	10–45