In Colombia, voluntary hiv testing in high-risk populations ranges from 20% to 50%.Knowing the characteristics of people who have recently been diagnosed could direct screening and education strategies.Objective: to determine the hiv+ frequency and its relation with social demographic factors, knowledge, and behavior in men who have sex with men (msm).Methodology: from 2012 to 2015, a descriptive study was conducted in Cali Colombia using hiv screening with the participation of 503 msm over 18 years of age.Prior informed consent, we used a structured questionnaire and a quick hiv test.The study conducted descriptive analyses comparing groups depending on their hiv diagnosis and used multivariate logistic regression.Results: Average age 27.3 ± 8.9 years old.Sixty/three percent had been previously tested for hiv; hiv positive frequency was 13.9%, (CI95% 10.9 -17.0).There was a higher frequency of hiv positive diagnostic in people >25 (OR 3.1; CI95% 1.5 -6.6); with mid-school education (OR 2.8, CI95% 1.3 -6.0); use of psychoactive substances (OR 2.0; CI95% 1.0 -4.1); tattoos/ piercings (OR 2.4; CI95% 1.1 -5.0); history of STIs (OR 2.6; CI95% 1.3 -5.4); and those who believed they were at risk (OR 3.2; CI95% 1.5 -6.9).Conclusion: The results of the study suggest characteristics that could lead an HIV search in people who have risk factors in addition to their vulnerability because of their sexual practices.--------