Biochemical tests A blood sample will be collected during routine consultations for Metabolic and Immune analysis Viral Load Laboratory - Serology Sector HCFMRP-USP. The concentrations of total cholesterol (TC), triglycerides, low density lipoproteins (LDL), high density lipoprotein (HDL), insulin and fasting blood glucose are determined by an enzymatic method using the kit Wiener Lab.®. For immune responses to viral load level, when the detectable HIV RNA is> 48 cópias.mL-1. Is determined by Real Time Abbott method using the kit Siemens - Versant® HIV-1 3.0 RNA and DNA Analyzer System 340® apparatus; and CD4 + and CD8 count by flow cytometry, using Multitest® kit and Facs Calibur® cytometer (Becton Dickinson - San Jose CA).