[Blood cultures in clinical practice: Principles, procedures, and quality management]

Area of Science:

• Clinical Microbiology
• Infectious Diseases
• Laboratory Medicine

Background:

• Blood cultures are essential for diagnosing bloodstream infections (bacteremia, fungemia).
• The diagnostic yield and clinical utility of blood cultures depend on the entire process, from collection to reporting.
• Pre-analytical, analytical, and post-analytical factors significantly influence blood culture outcomes.

Purpose of the Study:

• To provide a comprehensive review of blood culture testing principles.
• To highlight best practices for each phase of blood culture analysis.
• To emphasize the importance of quality management in blood culturing.

Main Methods:

• Review of principles for appropriate blood culture indications and timing.
• Discussion of pre-analytical factors: volume, aseptic technique, transport.
• Examination of analytical factors: culture systems, media, incubation, positive culture processing.
• Analysis of post-analytical factors: interpretation, reporting, contamination, surveillance.
• Focus on quality indicators and systematic quality management.

Main Results:

• Appropriate blood culture collection involves specific indications, timing, volume, and aseptic techniques.
• Laboratory processing requires careful selection of culture systems, media, and incubation conditions.
• Accurate interpretation and reporting of results, including critical findings and contamination, are vital.
• Systematic quality management and standardized workflows enhance the overall quality of blood cultures.

Conclusions:

• Blood cultures are a complex diagnostic process requiring integrated clinical and laboratory coordination.
• Standardization of workflows and continuous quality evaluation are critical for optimal performance.
• Effective blood culture management improves timely diagnosis, targeted therapy, and patient safety.