Table 2 Mean value, range and coefficient of variation (CV) in CSF and serum for C₄and IgA

Size (n)

12

10

CSF C₄ (mg/L)

Mean

12.07

2.43

Range

0.17–114

0.17–12

CV

2.67

1.60

Serum C₄ (g/L)

Mean

1.12

1.08

Range

0.19–5.6

0.37–5.6

CV

0.71

1.56

Q C₄ × 10³

Mean

7.35

1.49

Range

1.1–39.4

0.38–10.8

CV

1.45

1.79

Q Alb × 10³

Mean

5.91

5.36

Range

0.3–17.1

0.3–27.41

CV

0.79

0.99

C₄-Index

Mean

1.91

0.74

Range

0.3–5.05

0.02–3.66

CV

0.96

1.49

CSF IgA (mg/L)

Mean

1.09

1.28

Range

0.17–4.62

0.32–5.6

CV

1.17

1.37

Serum IgA (g/L)

Mean

1.12

0.67

Range

0.32–5.6

0.17–1.7

CV

1.38

0.90

QIgA × 10³

Mean

1.76

0.92

Range

0.16–10.62

0.16–3.5

CV

1.05

1.34