TABLE 1.

Laboratory investigation results prior to discharge during the first admission with COVID‐19 pneumonia

Investigation	Result	Reference range
Sodium (mmol/L)	130	135–45
Chloride (mmol/L)	94	95–110
Potassium (mmol/L)	4.8	3.3–4.9
Creatinine (µmol/L)	188	60–110
Urea (mmol/L)	14.5	2.3–7.6
Estimated glomerular filtration rate (ml/min)	36	>60
C‐reactive protein (mg/L)	5	0–10
Haemoglobin (g/L)	140	130–180