Serogrouping of beta-hemolytic streptococci from throat swabs with nitrous acid extraction and the Phadebact streptococcus test.
A direct extraction of the antigen of group A beta-hemolytic streptococci from 373 throat swabs was done with a microtechnique of the nitrous acid extraction-Phadebact coagglutination method. The technique yielded a 96% agreement with the results obtained by a standard throat culture method in which the Phadebact grouping procedure with overnight broth supernatants was employed.
D000372:Agglutination Tests; D006801:Humans; D008832:Microchemistry; D009608:Nitrous Acid; D010614:Pharynx / Q000382:microbiology; D012703:Serotyping / Q000379:methods; D013297:Streptococcus pyogenes / Q000145:classification*
D009608:Nitrous Acid