Which statement best describes the composition of the team typically involved in designing a C. difficile testing algorithm to improve accuracy and timeliness?

• A. IP, infectious disease physician, and pharmacy and laboratory staff
• B. Nurses, custodians, and dietary staff
• C. Patients and families
• D. Security and facilities management

Answer: (A)

Designing an effective C. difficile testing algorithm relies on bringing together different areas of expertise that touch both patient care and the testing process. Infection preventionists understand how testing decisions affect infection control, transmission risk, and isolation practices. An infectious diseases physician provides clinical context—recognizing when symptoms and risk factors justify testing and helping to avoid unnecessary or missed diagnoses. Pharmacy colleagues contribute to antimicrobial stewardship, ensuring that test use aligns with appropriate antibiotic management and resource use. Laboratory staff bring the technical know-how to choose the right assays, understand their performance characteristics, handle specimens correctly, and implement reflex or confirmatory testing within the lab workflow.

This combination ensures the algorithm is accurate and timely: tests are ordered for appropriate patients, results are obtained quickly, and findings are integrated into patient management and infection-control decisions. While other roles like nurses, custodial and dietary staff, patients and families, or security and facilities management are essential to care and operations, they are not the primary designers of testing rules and workflows.