Objective: to evaluate the renal function of patients undergoing antiretroviral therapy. Methods: documentary, analytical and cross-sectional study with 150 Human Immunodeficiency Virus positive patients, using antiretroviral therapy, who had under gone exams of serum creatinine and abnormal urine elements and sediments, the glomerular filtration rate was calculated by the Chronic Kidney Disease Epidemiology Collaboration equation and renal dysfunction was stratified. Results: 11.3% of the participants presented a glomerular filtration rate of less than 90 ml/min/1.73 m². Of these, 8.0% had renal dysfunction stage 2, and 3.3%, in stage 3. The variables, older age and prolonged exposure to antiretroviral therapy were statistically significant for altering renal function. Conclusion: estimates of glomerular filtration rate by means of the Chronic Kidney Disease Epidemiology Collaboration equation proved to be an effective measure of early detection of renal function impairment in people living with Human Immunodeficiency Virus/Acquired immunodeficiency syndrome in the use of antiretroviral therapy. Descriptors: Antiretroviral Therapy, Highly Active; HIV Infections; AIDS-Associated Nephropathy. Objetivo: avaliar a função renal de pacientes em uso de terapia antirretroviral. Métodos: estudo documental, analítico e transversal com 150 pacientes Human Immunodeficiency Virus positivos, em uso de terapia antirretroviral, aos quais se ofertaram exames de creatinina sérica e de elementos e sedimentos anormais da urina, calculou-se a taxa de filtração glomerular estimada pela equação Chronic Kidney Disease Epidemiology Collaboration e estratificou-se a disfunção renal. Resultados: 11,3% dos participantes apresentaram taxa de filtração glomerular inferior a 90 ml/min/1,73m². Desses, 8,0% com disfunção renal estágio 2, e 3,3%, em estágio 3. As variáveis, maior idade e exposição prolongada à terapia antirretroviral, apresentaram significância estatística para alteração da função renal. Conclusão: estimativas da taxa de filtração glomerular por meio da equação Chronic Kidney Disease Epidemiology Collaboration mostrou-se medida efetiva de detecção precoce de alteração da função renal em pessoas vivendo com Human immunodeficiency virus/Acquired immunodeficiency syndrome em uso de terapia antirretroviral.