Conversion of IU/ml to copies/ml for HIV-1 and HBV

Question

What is the range of equivalence between IU/ml to copies /ml for HIV-1, HBV and HCV, respectively?. I have red that depends on the detection techniques. I am interested in qPCR based quantification. Thanks!

Answer

HIV viral load results are not expressed in IU. But, IU conversion factor is 1.74 copies/IU. HBV, 1 IU = 5.6 copies. For HCV 1 IU = 3.8 copies.