Table 2 Laboratory findings in elderly patients with COVID-19

Leukocytes (10⁹/L)

6.40 (4.54–9.00)

5.96 (4.53–7.85)

8.16 (5.58–12.50)

0.003

Lymphocytes (10⁹/L)

0.84 (0.54–1.18)

0.88 (0.68–1.34)

0.55 (0.36–0.88)

<  0.001

Neutrophils (10⁹ /L)

4.90 (3.10–7.44)

4.26 (2.85–6.10)

7.03 (4.30–7.03)

<  0.001

ALT (U/L)

25 (18–40)

26 (18–42)

23 (18–35)

0.24

AST (U/L)

31 (21–46)

30 (21–41)

42.5 (26–57)

0.007

LDH (U/L)

309 (223–467)

263 (214–359)

478.5 (363–584)

<  0.001

CK (U/L)

63 (42–114)

60 (41–93)

78 (45–215)

0.034

Albumin (g/L)

34.26 ± 4.05

34.56 ± 4.04

33.51 ± 4.02

0.999

Globulin (g/L)

25.3 (22.0–28.4)

24.7 (21.8–28.3)

25.7 (22.5–29.0)

0.14

Creatinine (μmol/L)

68.0 (56.0–92.0)

66.0 (57.0–81.0)

81.0 (54.0–120.0)

0.033

BUN (mmol/L)

6.50 (4.85–9.55)

6.20 (4.70–7.90)

9.90 (6.10–16.45)

<  0.001

CD3 (/μL)

455.5 (267–709)

558 (377–840)

244 (142–397)

<  0.001

CD4 (/μL)

281 (165–484)

333 (212–559)

165 (96–267)

<  0.001

CD8 (/μL)

145 (67–255)

191 (96–267)

64 (42–139)

<  0.001

CD19 (/μL)

109 (60–163)

114 (68–183)

75 (42–138)

0.016

CD16 + CD56 (/μL)

101 (59–210)

116 (72–247)

69 (39–118)

0.002

CRP (mg/L)

53.85 (15.25–94.10)

37.65 (11.40–70.80)

107.3 (55.2–188.0)

<  0.001

D-dimer (mg/L)

1.61 (0.68–5.96)

1.09 (0.50–3.26)

6.32 (2.37–17.44)

<  0.001

CD4/CD8

2.10 (1.39–3.14)

2.03 (1.39–3.16)

2.22 (1.30–3.03)

0.685

Procalcitonin (ng/mL)

0.093 (0.052–0.189)

0.076 (0.046–0.137)

0.166 (0.085–0.552)

<  0.001

C3 (g/L)

0.970 ± 0.200

0.989 ± 0.196

0.931 ± 0.201

0.835

C4 (g/L)

0.244 (0.186–0.310)

0.241 (0.187–0.301)

0.254 (0.152–0.328)

0.955

IgM (g/L)

0.822 (0.597–1.140)

0.779 (0.562–1.090)

1.030 (0.715–1.320)

0.059

IgG (g/L)

12.4 (10.4–15.0)

12.1 (9.5–15.0)

12.9 (11.2–14.9)

0.219

IgA (g/L)

2.70 (2.12–3.44)

2.59 (1.98–3.32)

3.19 (2.42–3.63)

0.036

IgE (IU/mL)

37.6 (18.3–98.7)

32.8 (18.3–92.4

70.3 (27.8–164.0)

0.046