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Pooling of sera for human immunodeficiency virus (HIV) testing: an economical method for use in developing countries.
  1. J C Emmanuel,
  2. M T Bassett,
  3. H J Smith,
  4. J A Jacobs
  1. Blood Transfusion Service, Harare, Zimbabwe.

    Abstract

    To determine whether donated blood samples in African countries could be pooled, then tested for the presence of human immunodeficiency virus (HIV) antibodies with a single test without loss of accuracy, a single test on five pooled samples was used, followed by individual testing of positive pools. This resulted in no loss of either sensitivity or specificity. Pooling 10 samples resulted in a loss of sensitivity for low antibody titre specimens. Pooling reduced the costs of screening by 70% and time needed for analysis. It is concluded that pooling of five samples for HIV screening may result in a substantial reduction in costs; in countries where the prevalence of HIV is higher than the 2-3% found in Zimbabwean donors, however, savings may not be as great.

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