"And finally," Aris said, pointing to a series of images showing a bladder emptying in real-time. "The patient feels like they can't fully void. We’re watching the muscles and the sphincter work during urination." " Leo guessed, then quickly corrected himself. "No, it's a Voiding Cystourethrogram (VCUG)

Urinalysis, Serum Creatinine, and Blood Urea Nitrogen (BUN).