Evaluation of an improved rapid coagglutination method for the serological grouping of beta-hemolytic streptococci
- 1 January 1979
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Microbiology
- Vol. 25 (1) , 40-43
- https://doi.org/10.1139/m79-006
Abstract
Grouping of beta-hemolytic streptococci was performed with the Phadebact® Streptococcus Test, a coagglutination method, and the results compared with serological grouping by the standard Lancefield precipitin method. Of 171 clinical specimens examined, 169 (98.8%) were grouped correctly by the Phadebact® Test after 24 h of continuous growth in Todd–Hewitt broth, In a parallel study, 96.9% of specimens that grew after only 4 h of incubation in broth were grouped correctly by the coagglutination method. In both studies, the accuracy of the coagglutination test was increased significantly by elimination of multiple-agglutination reactions through centrifugation of cultures and utilization of the supernatant fluid in the Phadebact® Test.This publication has 2 references indexed in Scilit:
- Laboratory evaluation of a rapid four-hour serological grouping of groups A,B,C, and G beta-streptococci by the Phadebact streptococcus testJournal of Clinical Microbiology, 1977
- Identification of streptococcal groups A,B,C, and G by slide co-agglutination of antibody-sensitized protein A-containing staphylococciJournal of Clinical Microbiology, 1976