Table 3

Baseline laboratory characteristics of patients with COVID-19 in different risk groups

Low risk
n=289
Intermediate risk
n=141
High risk
n=66
Very high risk
n=10
P value
Laboratory data: median (IQR)
WBC (×109/L)7.00 (3.36)7.71 (4.16)9.32 (4.998)11.57 (5.81)<0.001
Lymphocyte (%)27.95 (9.6)27 (16.8)17.09 (15.1175)7.02 (8.19)<0.001
HB (gm/dL)13.3 (1.51)13.2 (2.7)12.62 (3.96)9.89 (3.49)<0.001
Platelets (×109/L)259.7 (108)247(133)224.15 (116.4)167 (115.55)0.023
Urea (mg/dL)5.67 (2.2)7.40 (6.9)10.85 (10.8)23.05 (11.25)<0.001
Creatine (mmol/L)79 (27.5)83.3 (41.104)113.47 (186.36)321.9 (267.3)<0.001
ALT (U/L)25 (15.1)26 (22.75)27(42)36(23)0.184
AST (U/L)21 (12.95)26.9 (18.3)28 (30.4)50.3 (59)<0.001
INR (%)1 (0.1)1 (0.1)1.1 (0.2)1.2 (0.2)0.003
Inflammatory markers: median (IQR)
D-dimer0.75 (0.41)0.90 (1.045)1.31 (1.27)0.75 (1.03)<0.001
LDH (U/L)318 (148)299.50 (144)356 (232)318 (392.7)<0.001
Ferritin (ng/mL)318 (141.25)449.5 (525.75)483 (489)318 (585.6)<0.001
Lactate (mmol/L)1.6 (0.7)1.8 (0.6)1.9 (0.85)2.7 (1.1)<0.001
CPK (ng/mL)128 (38.25)144.5 (91.75)162 (149)128 (651)<0.001
Troponin (ng/mL)0.01 (0)0.01 (0)0.01 (0.011)0.02 (0.25)<0.001
CRP (mg/L)1.5 (1.3d)3.4 (8.6)6.26 (9.38)13.13 (4.62)<0.001
  • AST, alanine; CPK, creatine phosphokinase; CRP, C reactive protein; HB, hemoglobin; INR, international normalization ratio; LDH, lactic dehydrogenate; WBC, white blood cell.