Can you have early symptoms of hepatitis B and still test negative?

Yes. It is possible to experience early symptoms of hepatitis B and still test negative initially. This is because of the “window period” — the time between infection and when testing markers are detectable in your blood. According to CDC and WHO, many antibodies or antigens take 4-12 weeks (sometimes up to several months) after exposure to show up in tests. CDC+2hpsc.ie+2 If you’ve had a risky exposure and are seeing symptoms like fatigue, dark urine, or abdominal pain, doctors may recommend repeating blood tests after a few weeks. Early medical consultation is important rather than relying solely on one test result.