You are saying the Riba test, riba checks for antibodies to Hep C Virus. So are you getting that confused with HIV? Non-Reactive, generally means no antibodies have been found at this time. At this point, I would be tested once more in December, which would be 6 months from possible exposure date. If that comes up the same, then chances are you're fine.
If you are referring to a Riba test: The test cannot tell if you are currently infected, only if you have been exposed to the virus, which is Hep C.
Hope this helps, If you need anything else please feel free to ask. If you found this helpful don't forget to click the *ACCEPT* button and please take a moment to leave me *POSITIVE* feedback.
When you said you think the name of the test is Riba, that test is for Hep C. So giving the HIV <1.00 is Neg. Non reactive, no signs of antibodies. Which is what ones body would first produce if they do have the virus.
From the results given on this last one you had, all shows Neg- However, it's always best to retest again at 6 months just to be on the safe side. Which this last test was in Oct. 4 month out from possible exposure in June, so that in itself is good. But most people will retest again in 6 months and if still Neg non reactive, then are considered fine.
So basically at this point with the blood work you had done, the tests have not picked up any antibodies, which is a good sign.