Hepatitis B and inflammatory bowel disease: Role of antiviral prophylaxis

Table 1 Definitions of hepatitis B virus infection

	HBsAg	HBsAb	HBcAb	HBV DNA		ALT/AST	Liver biopsy
				HBeAg (+)	HBeAg (-)
Chronic HBV	Positive	Negative	Positive	> 20000 IU/mL	> 2000 IU/mL	Elevated	Chronic hepatitis with necroinflammation
Inactive HBV Carrier	Positive	Negative	Positive	< 20000 IU/mL	< 2000 IU/mL	Normal	No significant hepatitis
Resolved HBV	Negative	Positive	Positive	Undetectable	Undetectable	Normal	No significant hepatitis

HBV: Hepatitis B virus; HBsAg: Hepatitis B surface antigen; HBsAb: Hepatitis B surface antibody; HBcAb: Hepatitis B core antibody; ALT: Alanine aminotransferase; AST: Aspartate aminotransferase.