Lab test that uses menstrual blood to diagnose endometriosis.

Multicenter Studie Zur Diagnostischen Validierung Eines Labortests Zur Endometriose-Diagnose

Observational Diamens FlexCo · NCT07553676

This project will test whether a lab test using self-collected menstrual blood can accurately diagnose endometriosis in menstruating women aged 14–49.

Quick facts

Study typeObservational
Enrollment200 (estimated)
Ages14 Years to 49 Years
SexFemale
SponsorDiamens FlexCo Industry-sponsored
Locations8 sites (Linz and 7 other locations)
Trial IDNCT07553676 on ClinicalTrials.gov

What this trial studies

This is a prospective multicenter diagnostic validation that collects self-collected menstrual blood samples from participants at several Austrian centers. A laboratory protocol will analyze biomarkers in the menstrual blood and compare results between women with histologically or imaging-confirmed endometriosis and two control groups (laparoscopy-negative and imaging-negative healthy controls). Diagnostic performance will be reported using AUC, sensitivity, specificity, PPV, NPV, LR+ and LR-. Key exclusions include pregnancy, amenorrhea, active oncologic disease, and current use of GnRH agonists or antagonists.

Who should consider this trial

Good fit: Menstruating women aged 14–49 who either have confirmed endometriosis or are being evaluated for endometriosis and can self-collect menstrual blood are ideal candidates.

Not a fit: People who are pregnant, have amenorrhea, have active cancer, or are taking GnRH agonists/antagonists are excluded and would not benefit from participating.

Why it matters

Potential benefit: If successful, this test could offer a non-invasive way to diagnose endometriosis and reduce the need for diagnostic laparoscopy.

How similar studies have performed: Some early studies of menstrual- or blood-based biomarkers have shown promise, but large multicenter validation work remains limited.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion criteria:

* Women aged 14 to 49
* Menstruating
* Endometriosis group

  * Histologically confirmed endometriosis
  * Imaging-verified endometriosis
* Laparoscopy-negative group:

  \- Laparoscopy with no evidence of endometriosis
* Imaging-negative group:

  * Healthy women (no symptoms of endometriosis)
  * Imaging shows no evidence of endometriosis

Exclusion criteria:

* Amenorrhea
* Pregnancy
* Oncological diseases
* Use of GnRH agonists or antagonists

Where this trial is running

Linz and 7 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Endometriosis
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.