Markers			Interpretation
HBsAg*	HBcAb†	HBsAb‡	Interpretation
–	–	–	Susceptible to HBV infection (should be vaccinated)
–	–	+	Immune because of vaccination
–	+	+	Immune because of natural HBV infection
+	+	–	Acute or chronic HBV infection
–	+	–	Interpretation unclear; four possibilities: Resolved HBV infection (most common) False-positive HBcAb, thus susceptible “Low-level” chronic HBV infection Resolving acute HBV infection