Which blood tests detect viruses/infectious diseases?

CulturesTcellsAntibo. 1 Bacterial,Viral and Fungi Cultures 2Antibodies and quantitative Titers,IGG&IGM 3 T Helper Cells Count as is done in AIDS Cases 4 Blood Smear for Parasites like in Malaria 5 Viral Load Test by PCR 6 Antigen as in the case of Hepatitis B.Hep B Surface Antigen is used for screening of Hepatitis B 7 Interferon-Gamma release assay test for TB Infection which measures the immune responce to the TB Inf.