Endometriosis diagnosis: What to Expect From the Investigation

Investigating possible endometriosis is a process of gathering evidence and considering other causes of symptoms. There is no single routine blood test that can confirm or exclude it. Your symptoms, examination, imaging, and response to treatment all help shape the next decision.

Begin with the effect on your life

Describe pain during periods and at other times, discomfort during sex, and bowel or bladder changes. Explain whether symptoms affect sleep, work, school, exercise, or relationships. Mention family history and treatments you have already tried.

A symptom diary can help, but you should not postpone an appointment because you have not kept one. The symptom guide offers a starting point for what to record.

An abdominal or internal examination may be offered. The clinician should explain its purpose and seek your consent. You can discuss alternatives if an internal examination is unsuitable or you decline it, and you can ask to stop at any time.

Understand what imaging adds

Ultrasound can look for ovarian endometriomas, some forms of deep endometriosis, and other possible explanations for symptoms. A vaginal scan is often recommended; an abdominal scan may be considered if that approach is unsuitable or declined.

A normal result does not exclude endometriosis. Specialist ultrasound or MRI may be useful when deep disease is suspected. Our ultrasound guide explains how the question being asked affects the scan and its interpretation.

Investigation and relief can happen together

You may be offered pain relief or hormonal treatment while tests or referral proceed. Surgery is not always necessary before beginning treatment for suspected endometriosis.

If symptoms persist, initial treatment is unsuitable, or it has not helped, ask about further assessment. Suspected involvement of the bowel, bladder, or ureter, an endometrioma, or disease outside the pelvis can call for a specialist endometriosis service.

Where laparoscopy fits

Laparoscopy allows a surgeon to inspect the pelvis and may include tissue sampling or treatment. It can be considered even after normal imaging, but it has risks and should answer a clear clinical question. The laparoscopy guide outlines questions for that discussion.

Before leaving an appointment, ask what the current working diagnosis is, what is being investigated, and who will review the results. If a test is normal, ask what the next plan is for the symptoms themselves. Reassurance should explain the findings without leaving persistent pain unaddressed.