An undetectable viral load (VL)does not mean a persons HIV infection is gone. It means that the amount of HIV in a persons blood is too low to be measured with current tests. Also, an undetectable VL means that the risk of transmitting HIV has decreased but has not been eliminated. People have been infected with HIV even when their HIV+ partner’s VL is undetectable. Undetectable VLs in blood are not a guarantee that HIV is also undetectable in semen.Undetectable Viral Load? What is that?