Outsourcing Microbiology Services in Medical Centers: Is It Worth It?

Abstract

Outsourcing of microbiology laboratory services is a growing trend in US medical centers. Data on the actual impact of outsourcing on patient care, safety, and medical education, including costs, are limited. The objective of this study was to examine the published literature on the potential benefits and harms when medical centers outsource common microbiology services. We conducted a 16-step literature search of PubMed and Embase. Articles were selected for full-text review if their content matched our key questions: (1) What are the potential benefits of outsourcing core microbiology laboratory testing? (2) What are the potential harms to patient care and medical education when medical centers outsource essential microbiology services? The initial search yielded 6111 unique published articles; 36 were selected for full-text review, which resulted in the identification of 8 articles that addressed our key questions (2 editorials, 3 editorials with observational data, 1 survey, 1 case series, and 1 study of blood culture transport). These articles described a variety of issues, including longer turnaround times for blood cultures that resulted in delays in diagnosis and treatment, errors that resulted in patient morbidity, limited cost savings, and communication barriers. In this study, with the exception of the blood culture transport study, we found no published prospective studies that quantified the effects of outsourcing microbiology services on patient care, patient safety, or medical education. However, these largely anecdotal reports suggest that outsourcing microbiology services may have a detrimental impact on medical education, especially infectious disease training programs.