Table 3 Laboratory parameters of IgG4-RD patients with/without PAO/PA

HgB (g/L)

127 ± 21

135 ± 19

< 0.001*

WBC (10⁹/L)

7.9 ± 2.8

7.15 ± 2.55

0.014*

PLT (10⁹/L)

240 ± 87

238 ± 89

0.862

Eos% elevation (%)

22.5

32.4

0.077

ESR (mm/h), M (Q1–Q3)

44 (18–75)

16 (7–40)

< 0.0001*

Elevation of ESR (n, %)

61 (77.1%, 61/70)

205 (42.0%, 205/488)

< 0.001*

hsCRP (mg/L), M (Q1–Q3)

6.72 (2.14–24.65)

1.78 (0.72–5.12)

< 0.0001*

Elevation of hsCRP (n, %)

56 (70%, 56/80)

150 (37.5%, 150/400)

< 0.001*

IgG (g/L)

19.88 ± 8.20

21.28 ± 14.46

0.292

IgA (g/L)

2.53 ± 1.13

2.16 ± 1.29

0.02*

IgM (g/L), M (Q1–Q3)

0.88 (0.56–1.14)

0.77 (0.54–1.19)

0.573

IgG1 (mg/L), M (Q1–Q3)

9355 (7928–11,325)

8665 (7013–10,600)

0.03

IgG2 (mg/L), M (Q1–Q3)

5705 (4255–7350)

5595 (4290–7520)

0.873

IgG3 (mg/L), M (Q1–Q3)

461 (221–923)

439 (253–841)

0.802

IgG4 (mg/L), M (Q1–Q3)

4240 (2015–7730)

8310 (3250–17,075)

< 0.0001*

T-IgE (KU/L), M (Q1–Q3)

170 (95.3–463.5)

332 (119–720.5)

0.025*

Cr (μmol/L)

98.5 (73–131.3)

67 (57.7–78)

< 0.0001*

Elevation of Cr (n, %)

38 (50)

14 (2.8)

< 0.001*

C3 (g/L)

1.018 ± 0.322

0.948 ± 0.330

0.725

C4 (g/L)

0.217 ± 0.112

0.173 ± 0.102

0.004*