Personalized medicine requires physicians to employ complex and expensive diagnostic analyses. However, without evidence-based standards, there is over-utilization of testing that complicates patient care, diminishes quality, and increases costs. To address this, we implemented the diagnostic management team (DMT), a multi-disciplinary system for development and deployment of diagnostic testing guidelines for hematologic malignancies. The team created evidence-based standard ordering protocols (SOPs) for cytogenetic and molecular testing that were applied by pathologists to bone marrow biopsies on adult patients. Testing on 780 biopsies performed during the 6 months before SOP implementation was compared with 1,806 biopsies performed during the subsequent 12 months. After implementation, there were significant decreases in tests discordant with SOPs, omitted tests, and the estimated cost of testing to payers. The fraction of positive tests increased. Clinicians reported acceptance of the new procedures and perceived time savings. This process is a model for optimizing complex and personalized diagnostic testing.
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