Fig. 2From: Confirmation of HCV viremia using HCV RNA and core antigen testing on dried blood spot in HIV infected peoples who inject drugs in VietnamAssessment of HCV RNA and HCVcAg on DBS specimens collected from HIV/HCV co-infected patients care in Haiphong Viet Tiep Hospital, Vietnam. a Linear regression analysis HCV RNA levels for 86 matched DBS–serum pairs collected from subjects with chronic HCV infection. b Agreement between the HCV RNA quantification by plotting the differences between serum and DBS specimen averages of the two techniques using the Bland-Altman analysis. c Correlation between DBS HCVcAg and serum HCV RNABack to article page