Self-testing for HIV, HBV, and HCV using finger-stick whole-blood multiplex immunochromatographic rapid test: A pilot feasibility study in sub-Saharan Africa
Fig 3
Stacked columns showing analytical results of the interpretation of the Triplex HIV/HCV/HBsAg self-test results among the 251 study participants.
A. Overall interpretation of Triplex self-test results in the whole study population, including those using exclusively the paper-based instructions for use (PIFU) and those using both printed and video instructions for use (P&VIFU); B. Distribution of misinterpreted Triplex self-test results, including 50 positive tests misinterpreted as negative (dark grey; n = 30) or as positive but with confusion in band interpretation (lying grey hatches; n = 20), 23 negative tests misinterpreted as invalid (vertical grey hatches; n = 18), or positive (horizontal grey hatches; n = 5), and 1 invalid tests misinterpreted as negative (dark grey); C. Percentages of correctly interpreted and misinterpreted HIV band read as positive and negative; D. Percentages of correctly interpreted and misinterpreted HCV band read as positive and negative; E. Percentages of correctly interpreted and misinterpreted HBsAg band read as positive and negative. Columns in black represent misinterpretation, whereas columns in white represent correct interpretation. NS: Not significant; PIFU: Paper-based instructions for use; P&VIFU: Paper-based and video instructions for use.