For all enrolled subjects, the plasma sample will be tested with the following FDA-approved assays: EIA for anti-HIV-1/2, anti-HCV, anti-HBc total, anti-HBc IgM, anti-HBs, and HBsAg. The efficacy of Multiplo will be determined by comparing the results with patient infected status for HIV-1/2, HBV and HCV. The efficacy of Reveal will be determined by comparing the results with patient infected status for HBV.