Short description

Viral load refers to the amount of a virus or its genetic material in a specific volume of a biological sample, such as blood or plasma.

Synonyms
Virus load

Detailed description

The viral load is usually determined using methods of molecular biology that measure the amount of viral DNA or RNA in a sample. Among other things, it can be used to assess the course of a viral infection and the success of antiviral therapy. The viral load plays an important role, for example, in HIV as well as in chronic infections with hepatitis B or hepatitis C viruses. The significance of the measured viral load for disease progression, infectiousness, or treatment depends on the specific virus and the sample being tested.