Is Undetectable the Same as Negative?

If you're undetectable, you will still test positive for HIV. This is expected, and doesn't mean that your treatment is not working.

Does undetectable mean you can't transmit?

The agency has adopted the widely accepted position that an HIV-positive person with an undetectable viral load cannot pass the virus through unprotected sex. If you can't detect it, you can't transmit it.

How long can you remain undetectable?

A person's viral load is considered “durably undetectable” when all viral load test results are undetectable for at least six months after their first undetectable test result. This means that most people will need to be on treatment for 7 to 12 months to have a durably undetectable viral load.