I am 23 years old, about 6 months ago I had risk sex with a partner ( blood involved), he is HIV/Hep C positive. at 6 weeks after exposure I had varicella on my arms and chest and legs, so I went to get all STD test, the Hep C antibody test come back positive and HCV RNA come back negative. So I followed up other tests.
At 10 weeks, I test HCV RNA which come back Negative( I didn't test for antibody at week 10)
12 weeks, Hep C antibody and HCV RNA both negative.
6 month after exposure Hep C antibody and HCV RNA both negative.
There are one thing I have to mention, after weeks 10, I went back to my home country, the test kits here we use is different and we produce our own test kit, the doctor here told me the test kit here is not sensitive enough as they have in the US.
Can anyone tell me do I really have Hep C? Why I got positive antibody result when I was only in the US, but not for now? should I keep worrying and go for another test at 1 years mark? Whats the longest window period for Hep C antibody?