Бак посев экссудат наружного уха (левое) на респираторные инфекции (A.R.I. WELL D‐ONE)

Aerobic and facultative anaerobic culture (routine bacterial culture) is performed to isolate and identify the bacterial cause of infection from clinical specimens collected at diverse body sites. Results guide targeted therapy selection; when appropriate, antibiotic and bacteriophage susceptibility testing accompanies organism identification. The test is also used to gauge the effectiveness of ongoing antimicrobial treatment.

Humans host a broad community of microorganisms on the skin and mucosal surfaces. The greatest proportion—approximately 40%—resides in the gastrointestinal tract, with the remainder distributed across the skin, oropharynx, genitourinary tract, and other sites. Normal flora are described as resident (up to 90% of microbes present), facultative (less than 10%), and transient (no more than 0.5%). Microorganisms are also categorized by pathogenic potential into nonpathogenic (do not cause disease), opportunistic (present in small amounts under normal conditions but capable of causing inflammation when conditions permit), and pathogenic (true pathogens not found in normal flora). Bacteriologic culture of aerobic and facultative anaerobic flora characterizes the qualitative and quantitative composition of microorganisms in a clinical specimen, including detection of true pathogens. When opportunistic organisms are recovered in high titer or when pathogenic bacteria are identified, susceptibility testing to antimicrobial agents—including antibiotics and bacteriophages—is performed to support rational therapy selection.