Prior to performing a TURP, there are several key tests that most urologists employ.

Aside from a history, exam, IPSS score, PSA and urinalysis, most will assess residual urine volume, perform a cystoscopy and measure the prostate – either with a formal TRUS, or based on a CT, MRI or abdominal ultrasound. Urodynamic testing (UDS) is used to varying degrees before a TURP by urologists. On one end of the spectrum there are purists who will only offer a TURP to someone with UDS-proven obstruction;