A commercial indirect immunofluorescence assay (IFA), enzyme-linked immunosorbent assay (ELISA), and a passive hemagglutination kit were evaluated and compared with our in-house IFA and ELISA methods. Both IFA methods gave identical results but were less sensitive than ELISA methods. Likewise, the ELISA methods were comparable. The hemagglutination method gave a statistically significant difference when compared with our ELISA method (p = 0.018 McNemar test). It is recommended that the passive hemagglutination method should not be used in its current state.