Table 2.

Free light chain concentrations in CSF and serum *

Patient	LM	CSF-κ	CSF-λ	CSF-Ratio	Serum-κ	Serum-λ	Serum-Ratio
1	Yes	30.1	1.4	21.3	41.9	1.6	26.2
2	Yes	6.4	0.4	15.0	13.3	1.2	11.5
3	Yes	3.0	0.8	3.8	14.4	17.4	0.8
4	Yes	5.3	0.1	53.0	868.0	0.7	1240.0
5	Yes	32.6	0.4	85.8	114.0	13.5	8.4
6	No	0.2	0.1	1.9	15.2	17.3	0.9
7	No	0.4	0.4	1.0	5.6	12.4	0.5
8	No	0.5	0.4	1.2	28.1	1.7	16.7
9	No	16.9	4.8	3.6	41.2	32.3	1.3
10	No	18.5	16.4	1.1	18.5	16.4	1.1
11	No	0.4	0.4	0.9	26.9	35.9	0.7
12	No	11.5	2.8	4.0	30.1	19.7	1.5
13	No	0.7	0.4	1.6	5.6	1.6	3.5
14	No	0.3	0.4	0.7	N.D.	N.D.	N.D.
15	No	0.3	0.7	0.4	8.9	11.4	0.8
16	No	10.2	2.7	3.7	39.3	33.1	1.2
17	No	0.5	0.4	1.2	18.6	15.6	1.2

* values for kappa and lambda given in mg/l.

LM – lymphomatous meningitis; CSF – cerebrospinal fluid; N.D. – not done