Fig. 2From: HIV infection in Xi’an, China: epidemic characterization, risk factors to false positives and potential utility of the sample-to-cutoff index to identify true positives using Architect HIV Ag/Ab comboThe flow chart for identifying the 117 HIV infections and 100 false positives. * 7 cases were WB negative and one case was WB indeterminate (p24 band). ** one case was reactive to HIV-1/2Ab test and WB positive (gp120/gp160 and p24 bands) at the 2nd week of follow-upBack to article page