HBsAg Seroconversions 
Anti-HCV Seroconversions 
In patients newly infected with HBV, HBsAg is the only serologic marker initially detected.
・ 1 - 2 months later: repeat HBsAg testing and test for anti-HBc (including IgM anti-HBc)
・ 6 months later: repeat HBsAg testing and test for anti-HBs
・ If a new HCV infection in a hemodialysis unit is suspected to be nosocomial, testing with NAT should be performed in all patients who may have been exposed.
・ Repeat testing with NAT is suggested within 2 - 12 weeks in initially NAT-negative patients