An endometrial biopsy is a medical procedure used to collect a small sample of tissue from the lining of the uterus (the endometrium). This sample is then examined under a microscope to evaluate abnormal cells or diagnose underlying conditions.
Why it’s done
Healthcare providers may recommend an endometrial biopsy to investigate:
Abnormal uterine bleeding (heavy, irregular, or postmenopausal bleeding)
Suspected Endometrial cancer or precancerous changes
Hormonal imbalances
Causes of infertility or irregular menstrual cycles
Performed in a medical office—no surgery or general anesthesia required
A speculum is inserted (similar to a Pap smear)
A thin, flexible tube is passed through the cervix into the uterus
Gentle suction is used to collect a small tissue sample
The procedure usually takes less than 10 minutes.
Many people experience brief cramping, similar to strong menstrual cramps, during and shortly after the biopsy. Taking over-the-counter pain relievers beforehand may help reduce discomfort.
Light spotting or mild cramping for a day or two is common
Most people can return to normal activities the same day
Results are typically available within about 1–2 weeks