Principles of laboratory isolation and identification of the human immunodeficiency virus (HIV).

Diagnosis of human immunodeficiency virus (HIV) infections has relied most frequently on detecting the presence of HIV antibodies in sera. In many situations, however, patients management can be significantly improved if the presence of HIV can be demonstrated in patients' specimens. In this review, the need and value of HIV isolation for confirming the diagnosis of HIV, for disease staging, and for monitoring the effectiveness of antiviral therapy are discussed. The steps involved in isolation of HIV, the cell systems permissive to HIV growth, and the procedures for virus identification are reviewed. Furthermore, methods available for the direct detection of HIV in patients' specimens are summarized. Although isolation of HIV is presently an elaborate procedure, as easier methods become available, it will play a large role in the management of HIV-infected individuals.