What is an Undetectable Viral Load?
When copies of HIV cannot be detected by standard viral load tests, an HIV-positive person is said to have an “undetectable viral load.” For most tests used clinically today, this means fewer than 50 copies of HIV per milliliter of blood (<50 copies/mL).

What does it mean to be undetectable?
It is important to note that undetectable does not mean cured or free of HIV. It simply means that the treatment has stopped the virus from replicating therefore making it far extremely unlikely to be passed on – or transmitted – during unprotected sex or higher risk play.