The main difference between an HSG and a saline sonogram lies in what each test evaluates.

A Hysterosalpingogram (HSG) primarily examines:

● Whether the fallopian tubes are open or blocked

● The general outline of the uterine cavity

● Structural abnormalities that may prevent fertilization

During an HSG, contrast dye is injected through the cervix while X-ray imaging tracks how the dye moves through the uterus and fallopian tubes. If the dye spills freely into the pelvic cavity, the tubes are considered open.

A Saline Infusion Sonogram (SIS), on the other hand, focuses on:

● Detailed visualization of the uterine lining

● Detection of abnormalities inside the uterus

● Evaluation of implantation conditions

Instead of dye and X-rays, sterile saline is introduced into the uterus while ultrasound imaging captures high-resolution views of the uterine cavity.

At Conceptions Fertility Center, Dr. Andrew K. Moore explains that these tests are complementary rather than interchangeable, as each answers a different fertility question.

Yes, an HSG uses low-dose fluoroscopic X-ray imaging to visualize the reproductive tract. Understandably, many patients worry about radiation exposure and its effect on ovarian health.

Fortunately, the radiation exposure during an HSG is:

● Extremely minimal

● Focused primarily on the uterus and tubes

● Comparable to standard diagnostic imaging procedures

The ovaries receive only a very small amount of exposure, and extensive research confirms that HSG testing does not harm eggs or reduce fertility potential.

A standard pelvic ultrasound provides valuable information about ovarian size, follicles, and overall uterine shape, but it does not fully evaluate the inside of the uterine cavity.

A saline sonogram enhances imaging by gently expanding the uterus with fluid, allowing providers to detect subtle abnormalities that may otherwise remain hidden. These include:

● Small uterine polyps

● Scar tissue (adhesions)

● Septum or structural irregularities

● Early fibroid formation

Dr. Andrew K. Moore often recommends SIS testing when implantation failure, miscarriage history, or unexplained infertility is suspected. Even when a routine ultrasound appears normal, small intrauterine issues may still interfere with embryo implantation.

Yes. A saline sonogram is typically more sensitive than an HSG for identifying abnormalities within the uterine cavity.

While an HSG outlines the uterus using dye, it may only suggest an irregular shape without clearly identifying the cause. In contrast, SIS provides detailed ultrasound visualization that can accurately diagnose:

● Uterine polyps

● Submucosal fibroids

● Endometrial thickening

● Adhesions or scar tissue

These conditions can significantly impact fertility by preventing proper embryo implantation or increasing miscarriage risk.

At Conceptions Fertility Center, identifying these issues early allows Dr. Andrew K. Moore and the clinical team to recommend minimally invasive treatments before proceeding with fertility therapies such as IUI or IVF.

Yes. Conceptions Fertility Center performs both HSG and Saline Infusion Sonogram procedures as part of a comprehensive fertility evaluation. Having both diagnostic options available in one center provides several advantages:

● Coordinated testing schedules

● Consistent interpretation by fertility specialists

● Personalized treatment planning

● Reduced delays in diagnosis

Dr. Andrew K. Moore and the Conceptions team carefully review each patient’s reproductive history, symptoms, and fertility goals before recommending testing. Some patients require only one procedure, while others benefit from completing both to obtain a complete understanding of uterine and tubal health.

The clinic prioritizes patient comfort throughout testing, offering clear guidance, preparation instructions, and post-procedure support to ensure a smooth experience.

In many fertility evaluations, both studies play important roles:

● HSG: Confirms fallopian tube openness and overall uterine contour

● SIS: Examines uterine lining quality and implantation environment

Together, they provide a comprehensive assessment of whether sperm can reach the egg and whether an embryo can successfully implant.

Choosing between an HSG and a saline sonogram depends on what your fertility specialist needs to evaluate. Rather than competing tests, they are diagnostic tools designed to answer different but equally important questions about reproductive health.

At Conceptions Fertility Center, Dr. Andrew K. Moore ensures patients receive individualized recommendations based on medical history and fertility goals. By utilizing advanced imaging techniques such as HSG and SIS, the clinic helps identify potential barriers to conception early, allowing patients to move forward with confidence on their fertility journey.

If you are unsure which test you need, a consultation with the Conceptions Fertility Center team can clarify the best diagnostic pathway and bring you one step closer to achieving pregnancy. For more information, contact us or schedule an appointment online. We have convenient locations to serve you in Provo, UT, and North Logan, UT. We serve patients from Provo UT, Orem UT, Mapleton UT, Vineyard UT, Highland UT, North Logan UT Hyde Park UT, Smithfield UT, Benson UT, Logan UT, and surrounding areas.