What type of test do they give there is it accurate??
They usually give the antibodies test and it is usually pretty accurate, however just because he is positive for the for the antibodies doesn't mean he has a active HCV infection, approx 20-25% of all people who come in to contact with the virus clear it with their own immune system, follow up testing with a HCV RNA by PCR is needed to confirm if he has a active infection
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.
http://www.cdc.gov/hepatitis/HCV/HCVfaq.htm#c5
What to do if the Hepatitis C Antibody Test is Reactive
•If the Hepatitis C Antibody Test is reactive, an additional, follow-up test will be needed to see if the Hepatitis C virus is currently in the blood.
•If the additional blood test is:
Negative—this means a person was infected with Hepatitis C, but the virus has now been cleared from his or her body.
Positive—this means a person currently has the virus in his or her blood and is chronically infected.
•If a person has a reactive antibody test and a positive follow-up test, he or she needs to talk to a health care provider experienced in treating Hepatitis C.
http://www.cdc.gov/knowmorehepatitis/LearnMore.htm