Texas Fertility Center San Antonio

Ovarian Assessment Report (OAR)

The Ovarian Assessment Report can help you learn more about your fertility

Women who want to learn more about their reproductive potential should ask our San Antonio fertility doctor, Erika Munch MD, about the Ovarian Assessment Report (OAR). This test uses a blood sample to provide one of the most accurate assessments of a woman’s egg supply.

How does the OAR work?

The Ovarian Assessment Report looks at multiple hormones from a single blood sample and a woman’s age. Using a special formula, the test combines this information and calculates the Egg Retrieval Score (ERS) for a woman.

The ERS predicts how many eggs a woman is likely to produce after ovarian stimulation. These numbers range from one to 20. Higher numbers suggest that a patient has a larger ovulatory egg supply. It also suggests that she is more likely to respond well to medication for stimulation.

  • A reduced ERS is one to five.
  • A fair ERS is six to 10.
  • A good ERS is 11 to 15.
  • An excellent ERS is 16 to 20.

What are the benefits of the Ovarian Assessment Report?

Our San Antonio fertility doctor often recommends the Ovarian Assessment Report because it has several benefits.

  • It can more accurately assess a woman’s available egg supply and predict her response to ovarian stimulation medications.
  • The OAR has greater predictive power than anti-Mullerian hormone (AMH) or follicle-stimulating hormone (FSH) testing alone.
  • It can more accurately predict how many eggs a fertility doctor can retrieve from a potential egg donor.

What are some other types of fertility testing?

When our San Antonio fertility doctor orders an OAR, she will receive a report with the results. She will review these with the patient to determine the best infertility treatment plan.

Although the OAR is a very accurate test, it is not the only tool that Dr. Munch uses to assess patients. She strives to provide patients with an accurate diagnosis. As a result, she looks at a patient’s unique situation to determine which diagnostic tests to order. Some examples include the following tests.

  • Transvaginal ultrasound allows Dr. Munch to review a woman’s uterus to look for any abnormalities. She can also use this tool to examine the ovaries and perform an antral follicle count.
  • Hysterosalpingogram (HSG) is a nonsurgical test that allows Dr. Munch to determine whether a woman’s fallopian tubes are open.
  • Preconception genetic testing can determine whether either parent carries a genetic disease they could pass to their children.

Contact us to learn more about infertility treatment and testing with our San Antonio fertility doctor. Our team is happy to guide you on your journey.