October 2018—It happened for next-generation sequencing. It was an important step for in vivo microscopy. And now it’s taking place with imaging mass spectrometry. The milestone: development and adoption of a set of specialized checklist requirements for laboratories that want CAP accreditation. Imaging mass spectrometry, an adjunct methodology to help pathologists analyze areas of interest in tissue specimens, is, at this point, used in a small number of research laboratories in the U.S., says CAP Checklists Committee member Christopher M. Lehman, MD, clinical professor of pathology, University of Utah College of Medicine, and medical director of the University of Utah Hospital Laboratory.