Table 1.

Initial investigations and results

Investigations	Results
ECG	Normal sinus rhythm
Urea and electrolytes	Normal
Liver function test	Alanine Aminotransferase elevated 41 (IU/L)
C reactive protein	Elevated 13 (mg/L)
Coagulation	Normal
Full blood count	White Cell Count reduced 2.4 (109/L) Neutropaenia 1.2 (109/L) Lymphopaenia 0.5 (109/L)
Glucose	Normal
Thyroid function test	Normal
Chest X-ray	No evidence of consolidation or collapse. Linear left basal atelectasis. COVID-19 cannot be excluded
CT brain	Normal
MRI brain	Normal

The patient was admitted for further ward-based investigations (table 3) and a neurological assessment and was also swabbed for COVID-19.