Table 2

KFLC test performance using 1 mg/L as the cut-off

KFLCnOCB IEFP value (McNemar test)
NegativePositive
Negative3128 (87.5%)4 (12.5%)1
Positive333 (9.4%)29 (90.6%)
Agreement (%)89.1
Cohen’s k0.8
  • IEF, isoelectrofocusing; KFLC, kappa free light chain.