Table 2. Laboratory parameters at the admission of hospitalised COVID-19 cases at the infectious and tropical diseases unit of the University Hospital, Florence, Italy, 25 February–26 March 2020 (n = 84).

Parameters	Reference values	Total n = 84		Not ICU transferred n = 68		ICU transferred n = 16		p value
		Median	IQR	Median	IQR	Median	IQR
White blood cells x 109/L, median	4.00–10.00	5.2	4.03–7.5	4.9	4.0–5.9	8.3	5.1–11.7	0.0028
Neutrophils x 109/L	1.50–7.50	3.7	2.8–5.5	3.4	2.6–4.9	6.0	4.2–10.2	0.0004
Lymphocytes 109/L	0.50–5.00	0.81	0.6–1.3	0.83	0.7–1.31	0.5	0.4–0.9	0.0209
Platlets	140–440	175	145–226	174	145–219	195	139–255	0.6442
Haemoglobin g/dl	14.0–18.0	13.7	11.4–14.8	13.7	12.6–14.9	13.6	11.3–14.6	0.2364
ALT (U/L)	10–50	24	16–44	24	15–43	23	18–54	0.7074
Creatinine (mg/dL)	0.70–1.20	0.9	0.8–1.1	0.9	0.7–1.0	1.0	0.8–1.1	0.2389
Sodium (mEq/L)	135–145	138	136–140	138	136–140	137	134–139	0.3903
Potassium (mEq/L)	3.5–5.1	4	3.7–4.3	4	3.7–4.3	3.9	3.6–4.3	0.5742
Procalcitonin (ng/mL)	< 0.5	0.12	0.07–0.23	0.09	0.06–0.16	0.29	0.17–2.07	< 0.0001
LDH (U/L)	135–225	251	199–323	239	195–284	325	259–407	0.0014
IL-6 (PG/ML)a	0.0–10.0	18.2	9.1–33.9a	18.1	7.7–43.1a	18.2	9.3–26.4a	0.9347
C-reactive protein (mg/L)	< 5	53	24–103	44	19–71	126	72–209	< 0.0001

ALT: alanine aminotransferase; COVID-19: coronavirus disease; ICU: intensive care unit; IL: interleukin; IQR: interquartile range; LDH: lactate dehydrogenase.

^a Available for 50 patients: 39 not transferred in ICU, 11 transferred in ICU.