[Causes of error in the study of fibrinogen clumping and the diagnosis of Staphylococcus aureus: Micrococci and Acinetobacter].
Rapid presumptive identification of S. aureus, particularly on the agar slant of biphasic blood culture bottles can be performed by modified slide clumping factor tests. We compared two commercial reagents (Staphyslide and Staphaurex) using strains of "Gram-positive cocci arranged in clusters" (S. aureus, S. epidermidis, Micrococcus) or diplococci-like organisms such as Acinetobacter. Micrococcus and Acinetobacter can be responsible for false-positive reactions with sensitized or not sensitized particles. Control reactions with not sensitized particles or autoagglutination tests in water rather than saline must be performed.
D000150:Acinetobacter / Q000302:isolation & purification*; D000372:Agglutination Tests; D005188:False Negative Reactions; D005189:False Positive Reactions; D005340:Fibrinogen / Q000378:metabolism; D006801:Humans; D008837:Micrococcus / Q000302:isolation & purification*; D011933:Reagent Kits, Diagnostic; D013211:Staphylococcus aureus / Q000302:isolation & purification*
D011933:Reagent Kits, Diagnostic; D005340:Fibrinogen
Causes d'erreur dans la recherche de l'affinité pour le fibrinogène et le diagnostic de Staphylococcus aureus: les Microcoques et Acinetobacter.