An HSG test (wisely abbreviated from hysterosalpingogram) is an X-ray exam used to determine if the fallopian tubes are blocked and if the shape of the inside of the uterus is normal.

An HSG positive for tubal abnormality should be confirmed by repeating it. The causes may include endometrial polyps, a fibroid, or an anatomical variation in the structure of the uterus and/or tubes.

As the dye filled my uterus and fallopian tubes, X-rays were taken, with the dye helping my doctor see properly and determine whether or not my tubes were blocked or damaged.