What tests are used to diagnose endometriosis?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Endometriosis diagnosis typically involves three key steps: a clinical evaluation of symptoms and medical history, imaging tests such as pelvic ultrasound or MRI, and in some cases, a minimally invasive surgical procedure called laparoscopy to confirm the presence of endometrial-like tissue outside the uterus.

Because endometriosis symptoms often overlap with other conditions, early insight matters. Take a free, instant, online symptom check to better understand what may be causing your symptoms and get clear guidance on your next steps—before booking appointments or undergoing invasive tests.

Reviewed for medical accuracy: 07/15/2026

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Explanation

Diagnosing endometriosis involves several steps. Initially, a doctor will discuss symptoms and medical history. If you're experiencing symptoms that concern you, you can start by using a free AI-powered symptom checker to better understand what might be causing them before your appointment. An ultrasound may be used to look for cysts related to endometriosis, but it cannot confirm the condition by itself.

Steps in Diagnosis:

Clinical Evaluation: The doctor will ask about symptoms such as pain and menstrual irregularities.
Imaging Tests: An ultrasound can help identify ovarian cysts associated with endometriosis.
Laparoscopy: This is a surgical procedure where a tiny camera is inserted into the abdomen to look for endometriosis tissue. It is the only way to definitively diagnose the condition.

While imaging tests can provide clues, laparoscopy is often necessary for a definitive diagnosis. This procedure allows the doctor to see the endometriosis tissue directly and sometimes take a sample for testing. It's important to work closely with a healthcare provider to determine the best approach for diagnosis and management.

(References)

Spaczynski RZ, & Duleba AJ. (2003). Diagnosis of endometriosis. Seminars in reproductive medicine, 12917789.
Kiesel L, & Sourouni M. (2019). Diagnosis of endometriosis in the 21st century. Climacteric : the journal of the International Menopause Society, 30905186.
Hsu AL, Khachikyan I, & Stratton P. (2010). Invasive and noninvasive methods for the diagnosis of .... Clinical obstetrics and gynecology, 20436318.

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