Office-based laboratory and bedside diagnostic procedures can be a helpful tool when assessing patients in the ambulatory setting. Diagnostic tests using a microscope (including assessment of vaginal discharge, urinary sediment, or skin scraping) or a diagnostic ultraviolet (UV) light (when evaluating the cornea or skin) can add valuable information to aid in proper diagnosis. This chapter will review necessary materials, technique, and interpretation for these often simple and inexpensive evaluations.
