Urologic procedures useful to the emergency physician in the diagnosis and management of urinary tract disorders are presented in this article. Discussed are urinalysis, diagnostic radiologic modalities (KUB film, intravenous pyelography, retrograde cystourethrography, computerized tomography, angiography, ultrasonography, and renal scintigraphy), and urologic procedures (urethral catheterization, percutaneous suprapubic cystostomy, suprapubic bladder aspiration, dorsal-slit procedure, and meatotomy). Where appropriate, indications, contraindications, method, and complications are presented for the various procedures.