What is the earliest serologic marker detected in hepatitis B?

Name: What is the earliest serologic marker detected in hepatitis B?
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The earliest serologic marker detected in hepatitis B is HBsAg (hepatitis B surface antigen). This antigen can be detected as early as 1-2 weeks after exposure and is used to diagnose acute and chronic hepatitis B infections. The other options (HAV, HBcAg, HBeAg) are markers for different phases of hepatitis A or B infections, but are not the earliest markers detected.

What Is the Earliest Serologic Marker Detected in Hepatitis B