Hepatitis C (Hep C) is a virus that infects the liver and is mostly commonly spread through sharing injectable drug equipment like needles and syringes but can also be spread through sexual activity. Most people do not experience symptoms until decades after the initial infection. The Healthyr Hep C test looks for viral genetic material in your blood, indicating an active infection. According to the CDC, this type of test is able to detect Hep C 1 to 2 weeks after exposure to the virus.