Which specialty most commonly performs urodynamic testing?

• A. Cardiology
• B. Endocrinology
• C. Nephrology
• D. Urology

Answer: (D)

Understanding how the bladder stores and releases urine is the key idea here. Urodynamic testing measures bladder pressures, flow, and sphincter activity during filling and voiding to evaluate conditions like urinary incontinence, detrusor overactivity, or bladder outlet obstruction. This set of tests is most closely aligned with the work of the urinary tract specialists who diagnose and treat these disorders, namely urology. Urologists routinely order and perform these studies (often with a urogynecology collaborator when relevant) to pinpoint how the bladder and urethra are functioning and to guide treatment. Other specialties—cardiology, endocrinology, nephrology—focus on different systems (heart, hormones, kidneys, respectively) and don’t typically include urodynamic testing as part of their standard practice, even though they may see patients with related symptoms who are referred for evaluation.