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Hepetitis B testing
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Hepetitis B testing

is a 6 week hepatitis B surface Antigen and a hepatitis B core total sufficient to exclude exposure  
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In my opinion, no.
http://www.clinlabnavigator.com/hepatitis-b-serology.html
HBV infection can result in both acute and chronic hepatitis. Approximately 90% of adults who are infected will resolve the infection without permanent organ damage, while 10% become carriers and 6% progress to chronic disease. Infected newborns and children have a much worse outcome. Chronic infection occurs in 90% of infants infected at birth and in 30% of children infected between ages 1 and 5 years.

After exposure to HBV, there is an incubation period ranging from 45 to 180 days, during which the patient will not exhibit symptoms or positive serologic results. Symptoms, if they appear, usually occur within 4 to 6 weeks after exposure. The most common symptoms include nausea, anorexia, malaise and jaundice. The stage of the infection can be monitored with tests for HBV antigens and antibodies.

HBsAg is the first serologic marker, developing between 6 weeks and 6 months following infection, but prior to onset of symptoms. Presence of HBsAg in serum may indicate acute HBV infection, chronic HBV infection, or asymptomatic carrier state. In acute infection, HBsAg usually disappears within 1 to 2 months after onset of symptoms. HBsAg persists in patients with chronic hepatitis. The significance of a positive test for HBsAg is determined by evaluating it in relationship to the presence or absence of the other HBV markers and the clinical presentation and history of the patient.
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