Endometriosis is a condition where tissue similar to the lining inside the uterus grows outside it, causing pain. This study, called EndoCheck, is about testing a special computer program that helps doctors find out if a woman with chronic pelvic pain has endometriosis. The computer program looks at proteins in the body to give its results. Doctors will see how good this test is by comparing it to a surgery called laparoscopy, where they look inside the belly to find endometriosis.

Women aged 14 to 50 who are planning to have this surgery can join the study. They can't join if they are pregnant, have certain infections, or have been in another study recently. The study wants to make sure the test spots endometriosis correctly at least 94% of the time and doesn't confuse it with something else at least 79% of the time.

• Study is observational, so no new treatment given.
• Must undergo surgery for pelvic pain to participate.
• Participants must be females aged 14-50.