| | Conditions & Treatments | Hepatitis How soon can hepatitis B be detected when contacted? Hepatitis B can be detected within 1 to 2 weeks after infection through a blood test looking for the hepatitis B surface antigen (HBsAg). Hepatitis - Related Articles Treatment for the Hepatitis C Virus Who is a candidate for hepatitis b treatment? Hepatitis Vaccine Information Can you get hepatitis from touching blood? What to Hepatitis C Genotypes Is cirousious of the liver contagious? What Is Worse: Hepatitis B or Hepatitis C?