Do I need bowel prep for an endometriosis ultrasound?

Usually, no bowel prep is needed for a standard transvaginal pelvic ultrasound used to evaluate suspected endometriosis. Most patients can eat, drink, and take medications as normal unless the imaging center gives you different instructions, and the key is simply arriving with whatever bladder filling they request.

Bowel prep is more commonly discussed when we’re specifically trying to “map” suspected bowel deep endometriosis—especially rectal involvement—using specialized imaging like an endorectal ultrasound, or when a radiology team has a particular protocol designed to improve visibility of the bowel wall and surrounding tissues. If your symptoms suggest bowel involvement, our team focuses on choosing the right type of imaging (and the right interpretation) so the results actually help guide next steps.

If you’re unsure what test you’re scheduled for, reach out to confirm whether it’s a routine transvaginal ultrasound or a bowel-focused study and what preparation, if any, is expected. We can also help you decide whether additional mapping would be useful based on your symptom pattern and exam findings.