Is it possible for someone to become infected with HCV and then spontaneously clear the infection?
Yes. Approximately 15%–25% of persons clear the virus from their bodies without treatment and do not develop chronic infection; the reasons for this are not well known.
How likely is HCV infection to become chronic?
HCV infection becomes chronic in approximately 75%–85% of cases.
Why do most persons remain chronically infected with HCV?
A person infected with HCV mounts an immune response to the virus, but replication of the virus during infection can result in changes that evade the immune response. This may explain how the virus establishes and maintains chronic infection.
Can persons become infected with a different strain of HCV after they have cleared the initial infection?
Yes. Prior infection with HCV does not protect against later infection with the same or different genotypes of the virus. This is because persons infected with HCV typically have an ineffective immune response due to changes in the virus during infection. For the same reason, no effective pre- or postexposure prophylaxis (i.e., immune globulin) is available.
http://www.cdc.gov/hepatitis/HCV/HCVfaq.htm#c5
"If I tested positive for HepC twice but.tested Negative twice for the more extensive blood work as well could the first 2 tests have been false positives?"
The first test in the series is an antibodies test, are they false positive, probably not considering you have had 2 positive test, however you test negative for HCV RNA (guessing from what you have said) twice, which means you do not have HCV, approx 20% of all people who are exposed to HCV will fight the infection off through their own immune system.
A reactive or positive antibody test result means that Hepatitis C antibodies were found in the blood which means a person has been infected with the Hepatitis C virus at some point in time. Most people who get infected with the virus, stay infected with Hepatitis C. This is known as chronic Hepatitis C. However, some people are able to get rid of or “clear” the virus. Once people have been infected, they will always have antibodies in their blood. This is true even if they have cleared the Hepatitis C virus.
http://www.cdc.gov/knowmorehepatitis/LearnMore.htm
"My next question is could I become positive at a later time?"
No, not from the past infection, you are not immune though and could become reinfected if exposed to HCV again in the future (blood to blood contact
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