Question

A patient is found to be positive for HBsAg on routine laboratory evaluation. Other serological tests for hepatitis are unremarkable. He is clinically asymptomatic and liver enzymes are within the normal range. Which of the following best describes his diagnosis?

• A. Inactive HBV carrier
• B. Acute hepatitis B
• C. Chronic hepatitis B
• D. Active HBV carrier

Hint:

HBsAg positive but feeling well with normal liver enzymes equals the inactive carrier state.

Answer 1

The Correct Option is A

Step 1: List the findings. HBsAg is positive. Other hepatitis serology is unremarkable, meaning there is no HBeAg activity and no acute IgM anti-HBc picture. The patient feels well and his liver enzymes (ALT/AST) are normal.

Step 2: Interpret the asymptomatic, normal-enzyme state. Persistent HBsAg with normal transaminases and no symptoms means the virus is present but is not causing ongoing liver inflammation. This is the inactive carrier state, also called the inactive HBsAg carrier or low-replicative phase.

Step 3: Rule out acute hepatitis B. Acute infection would show jaundice or malaise with markedly raised enzymes and a positive IgM anti-HBc, none of which are present here.

Step 4: Rule out chronic active hepatitis B. Chronic active disease shows raised liver enzymes from continuing inflammation, often with detectable HBeAg or high HBV DNA. Here the enzymes are normal, so active chronic hepatitis does not fit.

Step 5: Address active carrier. An active carrier would have ongoing replication and liver damage, contradicting the normal enzymes. So the only label fitting an asymptomatic, normal-enzyme, HBsAg-positive person is inactive carrier.

The answer is option A, inactive HBV carrier.