RT Book, Section A1 Prasad, Ramakrishna A2 South-Paul, Jeannette E. A2 Matheny, Samuel C. A2 Lewis, Evelyn L. SR Print(0) ID 1106852920 T1 HIV Primary Care T2 CURRENT Diagnosis & Treatment: Family Medicine, 4e YR 2015 FD 2015 PB McGraw-Hill Education PP New York, NY SN 9780071827454 LK accessmedicine.mhmedical.com/content.aspx?aid=1106852920 RD 2024/03/29 AB ESSENTIALS OF DIAGNOSISDiagnosis of HIV infection is made by HIV antibody testing by ELISA, confirmed by Western blot or multispot ELISA.Absolute CD4 lymphocyte count is widely used for staging HIV disease. Acquired immune deficiency syndrome (AIDS) is defined as a CD4 <200 cells/μL. AIDS represents advanced HIV disease that is associated with opportunistic infections or malignancy in the absence of treatment.HIV RNA level (viral load) is used to monitor response to antiretroviral therapy.