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Table 3 Comparison of the results for intrathecal fraction of C4 in CSF calculated as C4 loc (mg/l) and as the C4-Index in patients with inflammatory disease and non-inflammatory controls.

From: CSF/serum quotient graphs for the evaluation of intrathecal C4synthesis

 

Intrathecal C4 fraction

C4-Index

 

C4 loc > 0

C4 loc < 0

> 0.46

< 0.46

Meningoencephalitis

9/12

3/12

10/12

2/12

Non inflammatory controls

0/10

10/10

2/10*

8/10

  1. The discrimination cut off for the C4-Index = 0.46.
  2. * Two false positives
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Fluids and Barriers of the CNS

ISSN: 2045-8118