What Is an Endometrial Biopsy? How Is a Tissue Sample Taken from the Uterus?

Endometrial biopsy is the process of taking a small tissue sample from the endometrium, the inner lining of the uterus, and examining it in a pathology laboratory. Commonly known as “taking a tissue sample from the uterus,” this method is especially used in the evaluation of abnormal uterine bleeding, postmenopausal bleeding, thickening of the uterine lining, suspected polyps, or the risk of endometrial cancer (1).

The endometrium is the inner lining of the uterus that thickens and sheds under the influence of hormones throughout the menstrual cycle. When irregular thickening, polyps, hyperplasia, infection, or precancerous changes develop in this tissue, unexpected bleeding may occur. Endometrial biopsy plays an important role in diagnosis and treatment planning by allowing these changes to be evaluated under a microscope (2).

Why Is an Endometrial Biopsy Performed?

Endometrial biopsy is performed to evaluate whether there are abnormal cell changes, precancerous lesions, hyperplasia, polyps, or hormone-related changes in the uterine lining. According to Cleveland Clinic, this procedure allows abnormal cells to be investigated by taking a tissue sample from the endometrium (1).

The main situations in which endometrial biopsy may be performed are:

• Postmenopausal vaginal bleeding,
• Irregular, prolonged, or excessive menstrual bleeding,
• Bleeding between periods or unexpected spotting,
• Thickening of the uterine lining, meaning increased endometrial thickness,
• Suspicion of endometrial hyperplasia,
• Suspicion of endometrial cancer,
• Intrauterine polyps or abnormal ultrasound findings,
• Evaluation of response to hormone therapy,
• Some infertility and recurrent miscarriage evaluations.

ACOG defines abnormal uterine bleeding as bleeding that differs from normal in terms of amount, duration, frequency, or regularity. In such bleeding, methods such as ultrasound, laboratory tests, hysteroscopy, or endometrial biopsy may be used to determine the underlying cause (3).

Why Is a Tissue Sample Taken from the Uterus?

The main purpose of taking a tissue sample from the uterus is to examine the cellular structure of the uterine lining under a microscope. Thanks to this examination, the cause of bleeding, the hormonal status of the endometrium, and possible cellular changes can be evaluated.

The main reasons for taking a tissue sample from the uterus are:

1. Abnormal Bleeding: It may be performed to investigate the cause of excessive, irregular, prolonged, or postmenopausal bleeding.
2. Endometrial Hyperplasia: It is used to evaluate whether there are cellular changes when the uterine lining thickens more than normal.
3. Suspicion of Endometrial Cancer: It is an important diagnostic method for investigating uterine cancer or precancerous cell changes.
4. Polyps and Intrauterine Abnormalities: If a suspicious area is seen on ultrasound or hysteroscopy, a tissue sample may be taken.
5. Infertility Evaluation: In some patients, it may be used to evaluate whether the uterine lining is suitable for pregnancy.

How Is an Endometrial Biopsy Performed?

Endometrial biopsy can usually be performed in an office or hospital setting. During the procedure, the patient is placed in the gynecological examination position. A speculum is inserted into the vagina to make the cervix visible. Then, a thin catheter or biopsy instrument is passed through the cervix, and a small tissue sample is taken from the uterine lining (2).

Johns Hopkins Medicine states that the amount of tissue taken during endometrial biopsy and the area sampled may vary depending on the reason for the procedure. The sample taken is sent to a pathology laboratory and examined under a microscope (2).

1. The patient is placed in the appropriate position on the gynecological examination table.
2. The cervix is made visible with a speculum.
3. If necessary, the cervix is cleaned with an antiseptic solution.
4. A thin biopsy catheter is advanced into the uterus.
5. A small tissue sample is taken from the uterine lining.
6. The sample taken is sent to the pathology laboratory.

In most patients, the procedure takes a short time. Some people may feel cramps similar to menstrual pain during the procedure. Depending on the patient’s condition, pain threshold, and the procedure to be performed, local anesthesia, sedation, or different comfort methods may be preferred.

Can Endometrial Biopsy Be Performed Together with Hysteroscopy?

Yes. Endometrial biopsy may be performed together with hysteroscopy in some cases. Hysteroscopy allows the inside of the uterus to be directly visualized with the help of a camera. In this way, targeted biopsies can be taken from suspicious areas.

Especially if there are intrauterine polyps, fibroids, adhesions, irregular thickening, or suspicious areas that cannot be clearly evaluated by ultrasound, biopsy performed with hysteroscopy may provide more detailed information.

How to Prepare Before an Endometrial Biopsy?

Preparation before endometrial biopsy may vary depending on why the procedure is being performed and the patient’s general health condition. Before the procedure, medications used, blood thinners, possibility of pregnancy, allergies, and previous gynecological procedures must be reported to the physician (2).

• If you are pregnant or there is a possibility that you may be pregnant, inform your physician.
• Share all medications you use, especially blood thinners, with your physician.
• If you have a history of bleeding disorders, mention this before the procedure.
• If your physician recommends it, you may use painkillers before the procedure.
• Since mild bleeding may occur after the procedure, you may bring a sanitary pad with you.
• If sedation or anesthesia will be applied, you may need a companion to take you home after the procedure.

Is Endometrial Biopsy Painful?

The pain felt during endometrial biopsy may vary from person to person. While some patients feel only mild pressure or cramping, others may experience more noticeable pain similar to menstrual cramps. Since the procedure usually takes a short time, this discomfort is often temporary.

Your physician may recommend taking pain medication before the procedure. If there is cervical sensitivity, vaginismus, intense anxiety, a history of difficult gynecological examinations, or the need for an additional procedure, local anesthesia or different comfort methods may be considered.

Is Bleeding Normal After Endometrial Biopsy?

Mild bleeding, spotting, and cramps in the groin area after endometrial biopsy may be considered normal. Johns Hopkins Medicine states that mild cramps and spotting may occur for a few days after the procedure, and that tampons, vaginal douching, and sexual intercourse should be avoided for the period recommended by the physician (2).

However, if bleeding gradually increases, if there is heavy bleeding with clots, foul-smelling discharge, fever, or severe abdominal pain, a physician should be consulted.

What Should Be Considered After Endometrial Biopsy?

After the procedure, most patients can return to daily life within a short time. However, since a tissue sample is taken from inside the uterus, some recommendations should be followed to reduce the risk of infection and bleeding.

• Pad Use: A sanitary pad may be used for mild bleeding or spotting. Tampons are not recommended.
• Sexual Intercourse: Sexual intercourse should be avoided for the period recommended by the physician.
• Vaginal Douching: Vaginal douching should not be performed.
• Heavy Exercise: It may be appropriate to avoid heavy exercise and heavy lifting for the first few days.
• Pain Control: Painkillers recommended by your physician may be used. A physician should be consulted about medications that may have a blood-thinning effect.
• Warning Signs: If excessive bleeding, fever, foul-smelling discharge, or severe pain occurs, a physician should be consulted without delay.

Cleveland Clinic states that after endometrial biopsy, tampons should not be used, vaginal douching should not be performed, and sexual intercourse should be avoided for the period recommended by the physician (1).

Recovery Process After Endometrial Biopsy

The recovery process after endometrial biopsy is generally rapid. Most patients can go home after resting for a short time after the procedure. Mild cramps and spotting may last for a few days. If sedation or general anesthesia has been applied, it may be necessary not to drive on the same day and to return home with a companion.

During the recovery process, it is important to listen to the body, follow the physician’s recommendations, and seek medical support if unexpected symptoms occur. After the pathology result is available, a follow-up or treatment plan is created according to the findings obtained.

When Are Endometrial Biopsy Results Available?

Endometrial biopsy results may vary depending on the workload of the pathology laboratory, but they usually come out within a few days to a few weeks. The result evaluates whether the endometrium has a normal structure and whether hyperplasia, polyps, infection, precancerous changes, or cancer cells are present.

According to the pathology result, additional tests, medication treatment, hormone therapy, hysteroscopy, surgical intervention, or regular follow-up may be recommended.

Why Is Endometrial Biopsy Important in Postmenopausal Bleeding?

Postmenopausal bleeding is always a finding that should be evaluated. Mayo Clinic Health System states that postmenopausal bleeding should not be considered normal and may be associated with polyps, fibroids, atrophy, thyroid disorders, bleeding disorders, or more serious causes (4).

Therefore, even a single episode of bleeding after menopause should not be neglected. Depending on the physician’s evaluation, methods such as ultrasound, endometrial biopsy, or hysteroscopy may be used.

Is Endometrial Biopsy a Risky Procedure?

Endometrial biopsy is generally a safe and short procedure. However, as with every medical procedure, there are some risks. Rarely, infection, excessive bleeding, injury to the uterine wall, or feeling faint during the procedure may occur (2).

Risks may vary depending on the patient’s health condition, medications used, uterine structure, possibility of pregnancy, and the method by which the procedure is performed. Therefore, personal risk assessment before the procedure is important.

Frequently Asked Questions

Endometrial Biopsy Prices 2026

Endometrial biopsy prices may vary depending on whether the procedure is performed in an office or hospital setting, whether anesthesia is required, whether it is performed together with hysteroscopy, the scope of the pathology examination, and additional procedures.

The most accurate information about current endometrial biopsy prices for 2026 can be provided through a personal evaluation after the examination. This is because each patient’s complaint, risk status, and required procedure scope are different.

References

1. Cleveland Clinic. Endometrial Biopsy: Pain, Procedure, Results & Recovery. (https://my.clevelandclinic.org/health/diagnostics/15676-endometrial-biopsy)
2. Johns Hopkins Medicine. Endometrial Biopsy. (https://www.hopkinsmedicine.org/health/treatment-tests-and-therapies/endometrial-biopsy)
3. American College of Obstetricians and Gynecologists (ACOG). Abnormal Uterine Bleeding. (https://www.acog.org/womens-health/faqs/abnormal-uterine-bleeding)
4. Mayo Clinic Health System. Postmenopausal bleeding: Should you be concerned? (https://www.mayoclinichealthsystem.org/hometown-health/speaking-of-health/postmenopausal-bleeding-should-you-be-concerned)