title: Rapid, cost-effective identification of group A streptococci and enterococci by pyrrolidonyl-beta-naphthylamide hydrolysis.
abstract: Group A streptococci and enterococci were identified by two L-pyrrolidonyl-beta-naphthylamide (PYR) hydrolysis tests. One uses Minitek PYR disks (BBL Microbiology Systems, Cockeysville, Md.); the other uses a swab impregnated with PYR reagent. Both tests and Strep-A-Chek (EY Laboratories, San Mateo, Calif.), a commercially available PYR test, were compared with conventional methods. The PYR methods correctly identified all strains of group A streptococci and enterococci tested.
mesh_terms: D003362:Cost-Benefit Analysis; D006801:Humans; D006868:Hydrolysis; D011237:Predictive Value of Tests; D011760:Pyrrolidinones / Q000378:metabolism*; D013291:Streptococcus / Q000302:isolation & purification* / Q000378:metabolism; D013297:Streptococcus pyogenes / Q000302:isolation & purification* / Q000378:metabolism
chemical_list: D011760:Pyrrolidinones; C034099:pyrrolidonyl-beta-naphthylamide