An HIV antibody of 0.65 is within the normal range. The reference range for HIV antibodies is generally 0 to 1, within this value are normal, if more than 1, then it means that it is positive, may be HIV infection, it is recommended to go to the CDC to improve the diagnostic test to further clarify. The HIV antibody is an important laboratory indicator used to screen for HIV infection. If you have a history of high-risk exposure or high-risk behaviors, it is important to get tested after the incubation period has passed. Patients who are HIV-positive should be diagnosed as soon as possible, and if diagnosed, they should begin antiretroviral treatment to avoid delaying their condition.