Table 1 Demographic and laboratory characteristics in patients with MGUS and PCM.

Age

59 ± 12

62 ± 12

0.17

-

M:F

1:1

1.9:1

-

-

Hemoglobin, g/L

121 ± 16

99 ± 21

<0.005

121 – 161

Total protein, g/L

75 ± 13

73 ± 19

0.29

63 – 82

M component, g/L

10 ± 9

38 ± 20

<0.005

-

Calcium, g/L

0.089 ± 0.009

0.09 ± 0.011

0.28

0.084–0.102

β2-microglobulin, mg/L

2.4 ± 1.3

4.9 ± 3.6

0.02

0.7–1.8

Lactate dehydrogenase, U/L

184 ± 50

271 ± 99

<0.005

100 – 190

Osteolytic bone lesions

0%

100%

<0.005

-

Number of reduced Ig classes

0.2 ± 0.6

1.9 ± 0.4

<0.005

-

% plasma cells by morphology

4.2 ± 2.3

41 ± 21

<0.005

-

% plasma cells by flow cytometry

0.7 ± 0.8

19 ± 16

<0.005

-