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Comparison of light chain concentrations in cerebrospinal fluid and serum in 17 patients
| κ CSF | κ Serum | λ CSF | λ Serum | κ/λ CSF | κ/λ Serum | |
| Reference (mg/l) | not defned | 3.30–19.40 | not defined | 5.71–26.3 | not defined | 0.26–1.65 |
| Range (mg/l) | 0.2 – 32.6 | 5.6 – 868.0 | 0.1 – 16.4 | 0.7 – 35.9 | 0.4 – 85.8 | 0.5 – 1240.0 |
| Mean ± SD | 8.1 ± 10.1 | 80.6 ± 211.6 | 1.9 ± 3.9 | 14.5 ± 11.7 | 12.1 ± 23.9 | 82.3 ± 308.8 |
| Correlation | + 0.47 | + 0.26 | + 0.51 | |||
| P for Difference | < 0.01 | < 0.01 | 0.53 | |||
