Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Disease phases classification criteria2.
| Disease phases classification | ALT | HBV DNA | HBeAg |
| Immune active (IA) | Elevated | >20,000 IU/mL | Positive |
| >2000 IU/mL | Negative | ||
| Inactive CHB (IC) | Normal | Low HBV DNA level | Negative |
| Immune tolerance (IT) | Normal | >1 million IU/mL | Positive |
| Gray zone (GZ) | Not classified as IC, IT, or IA |
Upper limit of normal (ULN) of ALT: 30 U/L for males and 19 U/L for females. ALT = alanine aminotransferase, HBV = hepatitis B virus.
