"Detection of oligoclonal IgG bands in cerebrospinal fluid and serum: comparison between commercial immunofixation method and home-made affinity immunoblotting method and evaluation of interobserver agreement" . "Nov\u00E1\u010Dkov\u00E1, Ludmila" . . "1210-7921" . . "V" . . "19/40" . . "Klinick\u00E1 biochemie a metabolismus" . . . "5"^^ . "2"^^ . "[1662FA2A0D70]" . . "RIV/00843989:_____/11:00102039!RIV12-MZ0-00843989" . . "4" . "RIV/00843989:_____/11:00102039" . "Background: We compared two different agarose isoelectric focusing methods for detection of oligoclonal IgG bands in cerebrospinal fluid and serum: commercial method with immunofixation (Sebia) and home-made method using Multiphor II apparatus followed by affinity immunoblotting. Interobserver agreement for both methods was tested concerning the presence of intrathecal IgG synthesis, the detailed isoelectric focusing pattern type, the number of CSF-restricted oligoclonal IgG bands, and the number of oligoclonal IgG bands in CSF and in serum. Findings: Using kappa statistics for evaluation of agreement, we found there was very good agreement concerning the presence of intrathecal IgG synthesis (kappa 0.870 to 1.000 between methods, and 0.947 and 0.920 between observers, respectively, representing 0 to 5 out of 114 samples classified differently). The agreement was less pronounced when international consensus classification of isoelectric focusing patterns into 5 different types was taken into account (kappa 0.389 to 0.596 between methods); using home-made method, the interobserver agreement regarding pattern type was worse (kappa 0.478) than using commercial Sebia method (kappa 0.791). There was moderate agreement on the number of CSFrestricted oligoclonal IgG bands, and mostly poor agreement on the number of oligoclonal IgG bands in CSF and serum. Conclusions: Both methods were capable to detect oligoclonal IgG reliably, and neither method could be evaluated as superior to the other. However, better interobserver agreement regarding to the pattern type was obtained using commercial Sebia immunofixation method. Rather poor reproducibility of oligoclonal IgG bands numbering should be known to clinicians, since it entails the risk of potentially misleading interpretations."@en . "Zeman, David" . . "CZ - \u010Cesk\u00E1 republika" . "oligoclonal IgG bands; different agarose isoelectric focusing methods; cerebrospinal fluid"@en . "193716" . . . . . "Background: We compared two different agarose isoelectric focusing methods for detection of oligoclonal IgG bands in cerebrospinal fluid and serum: commercial method with immunofixation (Sebia) and home-made method using Multiphor II apparatus followed by affinity immunoblotting. Interobserver agreement for both methods was tested concerning the presence of intrathecal IgG synthesis, the detailed isoelectric focusing pattern type, the number of CSF-restricted oligoclonal IgG bands, and the number of oligoclonal IgG bands in CSF and in serum. Findings: Using kappa statistics for evaluation of agreement, we found there was very good agreement concerning the presence of intrathecal IgG synthesis (kappa 0.870 to 1.000 between methods, and 0.947 and 0.920 between observers, respectively, representing 0 to 5 out of 114 samples classified differently). The agreement was less pronounced when international consensus classification of isoelectric focusing patterns into 5 different types was taken into account (kappa 0.389 to 0.596 between methods); using home-made method, the interobserver agreement regarding pattern type was worse (kappa 0.478) than using commercial Sebia method (kappa 0.791). There was moderate agreement on the number of CSFrestricted oligoclonal IgG bands, and mostly poor agreement on the number of oligoclonal IgG bands in CSF and serum. Conclusions: Both methods were capable to detect oligoclonal IgG reliably, and neither method could be evaluated as superior to the other. However, better interobserver agreement regarding to the pattern type was obtained using commercial Sebia immunofixation method. Rather poor reproducibility of oligoclonal IgG bands numbering should be known to clinicians, since it entails the risk of potentially misleading interpretations." . "Detection of oligoclonal IgG bands in cerebrospinal fluid and serum: comparison between commercial immunofixation method and home-made affinity immunoblotting method and evaluation of interobserver agreement" . "Detection of oligoclonal IgG bands in cerebrospinal fluid and serum: comparison between commercial immunofixation method and home-made affinity immunoblotting method and evaluation of interobserver agreement"@en . . . . "Detection of oligoclonal IgG bands in cerebrospinal fluid and serum: comparison between commercial immunofixation method and home-made affinity immunoblotting method and evaluation of interobserver agreement"@en . "2"^^ .