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Non reactive test means negative for HIV
, it means there are no / no sufficient antibodies
in the blood.
I would suggest you to get your girlfriend tested before evaluating the risk. Even if she is not involved with her ex husband since three years still she could be a infected during previous encounters (3 years back). Hence get her tested if she is negative even for antibody test then she can be considered negative for HIV without doubt about the sensitivity of the test as the window period would have already elapsed.Your risk can be estimated only on her status.
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