Table IV.

Distribution ranges of COI values and WB test results in photostimulated chemiluminescence assay.

COI	Photostimulated chemiluminescence assay positive	WB positive	WB negative
1.0–10.0	26	1	25
10.0–20.0	2	0	2
20.0–30.0	2	0	2
30.0–40.0	2	2	0
> 40.0	47	47	0
Total	79	50	29

¹COI – cut-off index, WB – Western blotting