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  • Title: Clinical laboratory: enzyme immunoassay for the rapid clinical identification of snake venom.
    Author: Coulter AR, Harris RD, Sutherland SK.
    Journal: Med J Aust; 1980 May 03; 1(9):433-5. PubMed ID: 6993892.
    Abstract:
    The treatment of snakebite could be simplified if the identity of the offending snake was more frequently known. A positive identification, which allows the use of a specific monovalent antivenom, probably occurs in less than 20% of cases. Recently published methods of venom detection (RIA and ELISA) take at least three hours to complete. We have developed a sandwich enzyme immunoassay (EIA) which is capable of detecting 0.5 ng of crude snake venom in about 90 minutes or 2 ng of crude venom in about 30 minutes. This substantial reduction in incubation times, while still retaining the sensitivity required, was due to the use of protein A purified rabbit IgG antivenom from hyperimmune serum and the enzyme horseradish peroxidase (HRPO). A rapid identification of the offending snake by this method may reduce the use of large-volume polyvent antivenoms, thus avoiding the clinical and economic disadvantages of such preparations. Other advantages would be an increased understanding of the clinical syndrome produced by the individual species of snake, and accumulation of data about the incidence of envenoming attributed to specific snakes.
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