Integrated device for diagnostic analyses used to verify the presence of bacteria in at least a biological sample mixed with a eugonic culture medium in liquid form, to classify at least the type of bacteria, and to test a series of antibiotics, selected from a group of characteristic antibiotics at least for said type of bacteria identified, identifying those effective to determine the antibiotic therapy, characterized in that it comprises, inside an integrated structure: - first containing means provided with containing elements in which the biological samples to be analyzed are distributed; - second containing means comprising recipients or micro-plates thermostated with wells containing a eugonic culture medium in liquid form in which a first fraction of the biological samples to be analyzed is dispensed, and a first recipient and second recipients or plates (66a, 66b) with a relative first well and second wells, in which a further fraction of the biological samples which resulted positive to the analysis is dispensed; - first examining means (40, 49) able to verify the presence of bacteria in said biological samples contained in said first containing means and dispensed in the recipients or micro-plates with wells to detect corresponding positive biological samples and to classify or identify at least the type of bacteria present in said positive biological samples in order to select a group of antibiotics appropriate to these; - second examining means (49, 40) able to verify, on said first recipient or first well and on said second recipients or second wells, the sensitive or resistant response of each positive biological sample to a series of antibiotics of the group of antibiotics selected by said first examining means (40, 49); - third containing means comprising plates (116a, 116b) containing solid culture means in which a second fraction of the biological sample corresponding to a sample found positive by said first examining means (40, 49) is sown, in order to obtain the isolation and/or identification of said bacteria; - a movement and selection unit governed by a control unit to automatically perform at least the taking of the positive biological samples and their distribution in said containing means and in said third containing means; wherein said first examining means (40, 49) comprises a reading system provided with means able to detect the attainment of a given level of turbidity equal to 0.5 on the McFarland scale of the bacterial suspension present in said recipients or micro-plates with wells obtained during the exponential bacterial growth step. - first containing means provided with containing elements in which the biological samples to be analyzed are distributed; - second containing means comprising recipients or micro-plates thermostated with wells containing a eugonic culture medium in liquid form in which a first fraction of the biological samples to be analyzed is dispensed, and a first recipient and second recipients or plates (66a, 66b) with a relative first well and second wells, in which a further fraction of the biological samples which resulted positive to the analysis is dispensed; - first examining means (40, 49) able to verify the presence of bacteria in said biological samples contained in said first containing means and dispensed in the recipients or micro-plates with wells to detect corresponding positive biological samples and to classify or identify at least the type of bacteria present in said positive biological samples in order to select a group of antibiotics appropriate to these; - second examining means (49, 40) able to verify, on said first recipient or first well and on said second recipients or second wells, the sensitive or resistant response of each positive biological sample to a series of antibiotics of the group of antibiotics selected by said first examining means (40, 49); - third containing means comprising plates (116a, 116b) containing solid culture means in which a second fraction of the biological sample corresponding to a sample found positive by said first examining means (40, 49) is sown, in order to obtain the isolation and/or identification of said bacteria; - a movement and selection unit governed by a control unit to automatically perform at least the taking of the positive biological samples and their distribution in said containing means and in said third containing means;