Laboratory diagnosis is generally accomplished by testing seraum or plasma to detect virus-specific immunoglobulin (IgM, IgG) by means of an immunoassay. Since the symptoms and geographic spread of chikungunya and dengue fever overlap, a differential diagnostic work-up is of utmost importance, putting special performance demands upon diagnostic tests. Moreover, due to the absence of widespread seropositivity in the European population, any positive antibody test is suspicious for infection. In addition to the Chikungunya IgM _-capture ELISA, CD offers an IgG capture ELISA. Both assays boast outstanding performance data.