Microbiology Contamination Control and Culture Purity Policy

14 pages. Treats contamination as a question of origin rather than organism, with seven identified sources and where each is corrected. Covers blood culture contamination rates reported by collecting area, bench practice against cross contamination, media and environmental sources, molecular amplicon control, and mandatory purity checking before identification and susceptibility. Includes a pseudo outbreak investigation framework separating true infection from a common contamination source