A week-long rapid HIV testing campaign (Flash-Test) was organized in 2013 in four regions particularly affected by the epidemic: Île-de-France, Provence-Alpes-Côte d'Azur (PACA), Rhône-Alpes, and French Guiana. A questionnaire administered to those tested made it possible to analyze the population reached by this initiative. The analysis covered 8,713 people. The population was predominantly male and young. Thirty-eight percent of the participants were born abroad. Men who have sex with men accounted for nearly 15% of the tested population, people who inject drugs for 2.4%, and transgender people for 0.3%. Sixty-four percent of respondents had already taken an HIV test at some point in their lives. Over the course of the week, 48 people discovered they were HIV-positive, representing a rate of 0.55%. Compared to the community-based screening initiatives implemented in 2011, this intervention reached populations particularly at risk for HIV to a relatively lesser extent. Flash-Test participants were not particularly distant from the screening system. Finally, the ability to identify HIV-positive individuals was similar to that of the CDAG/Ciddist system (Anonymous and Free Screening Consultation / Center for Information, Screening, and Diagnosis of Sexually Transmitted Infections), or even lower in French Guiana. The Flash-Test initiative likely contributed to mobilizing screening stakeholders and raising public awareness of HIV screening and rapid testing. Nevertheless, analysis of participant characteristics does not reveal any epidemiological added value of this model compared to the existing screening system. (R.A.)