Comparison of Three Biofilm Detection Methods in Coagulase Negative Staphylococci Species

This study was conducted with the aim of investigating ability Coagulase Negative Staphylococci (CoNS) for detection biofilms, which are considered as main virulence factor in their pathogenicity. Three methods were used this purpose, tube method, congo red agar and tissue culture plate method. Thirty-seven isolates following bacteria tested, includes Staphylococcus epidermidis, S. saprophyticus, haemolyticus, hominis, lentus sciuri.The results method showed that most (64.5%) gave a moderate positive result, (32.3%) weak six no to form biofilm, that, majority result (89.3%) nine negative biofilm formation. As ranged between (62.9%) (31.4%) positive, while only two could not biofilm. When comparing efficiency three detecting CoNS it found efficient (94.6%), followed by (83.8%), (75.7%).