14:195-207
14:195-207. to all or any four laboratories. Using SBA titers from the tilt method for all samples, and using MC HPA as the comparator, the results were as follows for NZ ESR, NIPH, and Chiron, respectively, using log10 titers: correlation coefficients (= 0.89, slope = 0.833, and intercept = ?0.05 when the log10 titer of…