Book excerpt: In this issue of Urologic Clinics of North America, guest editor Dr. Adam Feldman brings his considerable expertise to the topic of Biomarkers in Urology. The use of biomarkers in clinical practice can range from screening, to refined detection in an at-risk population, to risk stratification following diagnosis, to prognostication following therapy. A better understanding of tumor biology and genetic heterogeneity will lead clinicians to adopt clinical paradigms that utilize sequences of biomarker assessments. In this issue, key experts help you remain at the forefront of the care of urologic malignancies by providing a timely update on emerging biomarkers in urology. Contains 15 practice-oriented topics including biomarkers in pediatric urology; unleashing the urinary microbiome in benign urologic disease; biomarkers for detection and assessment of clinically significant prostate cancer; biomarkers in testicular cancer: classic tumor markers and beyond; and more. Provides in-depth clinical reviews on biomarkers in urology, offering actionable insights for clinical practice. Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create clinically significant, topic-based reviews.