What Is an HSG Test?
HSG stands for Hysterosalpingography — a compound of three Greek words: hystero (uterus), salpingo (fallopian tubes), and graphy (imaging). It is an X-ray imaging procedure that uses a contrast dye to visualise the interior of the uterus and the fallopian tubes simultaneously.
The test works by introducing an iodine-based contrast dye through the cervix into the uterus. As the dye fills the uterine cavity and extends into the fallopian tubes, a live X-ray (fluoroscopy) captures its movement. The resulting images show the internal shape of the uterus and whether the dye flows freely through both tubes — indicating they are open — or stops at a particular point — indicating a blockage.
| Test Detail | Information |
|---|---|
| Full name | Hysterosalpingography (HSG) |
| Type of imaging | Fluoroscopic X-ray with contrast dye |
| What it examines | Fallopian tube patency + uterine cavity shape |
| Duration | 15–30 minutes (active procedure) |
| Anaesthesia | Not required |
| Cycle timing | Day 6–10 of the menstrual cycle |
| Cost in India | ₹3,000 – ₹8,000 |
| Results available | Immediate — visible during the procedure; report within 24 hours |
| Where performed | Radiology department (hospital) or on-site at fertility clinics |
Why Is the HSG Test Done?
The HSG test serves as a key diagnostic step when a couple is investigating why pregnancy has not occurred. It is commonly recommended as part of the standard infertility workup because fallopian tube problems — which the HSG can detect — account for approximately 25–30% of female infertility diagnoses.
Check if the Fallopian Tubes Are Open
The primary purpose of the HSG. Each fallopian tube must be patent (open) for the egg and sperm to meet inside the tube, and for the resulting embryo to travel to the uterus. Blockage at any point along the tube prevents natural conception.
Evaluate the Shape of the Uterine Cavity
The dye fills and outlines the uterine cavity, revealing structural abnormalities such as fibroids (particularly those protruding into the cavity), endometrial polyps, a septum (a tissue dividing the cavity), or scarring from previous surgery or infection (Asherman's syndrome). These can affect embryo implantation.
Identify the Location and Nature of Blockages
The HSG indicates where along the tube a blockage has occurred — near the uterus (proximal), in the middle, or near the ovary (distal). This information helps the specialist plan treatment. A distal blockage with fluid pooling, for example, may indicate hydrosalpinx, which has specific management implications for IVF.
Screen Before Fertility Treatment
Many fertility specialists order an HSG before recommending IUI (intrauterine insemination), as IUI cannot succeed if the tubes are blocked. Even before IVF — where tubes are bypassed — an HSG or sonosalpingography is often done to assess the uterine cavity and detect any hydrosalpinx that would reduce IVF success.
How Does the HSG Test Work? Step by Step
Understanding exactly what happens during the procedure helps reduce uncertainty. Here is the complete sequence:
Preparation
You will be asked to take ibuprofen (400–600mg) approximately one hour before the appointment to reduce cramping. Wear comfortable clothing. The clinic may ask you to take a prophylactic antibiotic (typically doxycycline) the day before and after to reduce the minimal risk of infection.
Positioning
You lie on an X-ray table in the same position as a standard pelvic examination — on your back with knees bent. A fluoroscopy (live X-ray) machine is positioned above the pelvis.
Speculum Insertion
A speculum is inserted into the vagina to hold it open and allow the doctor to see the cervix clearly — the same instrument used during a Pap smear. This step is typically painless.
Catheter Placement
A thin, flexible catheter is gently inserted through the cervical opening into the uterus. This step is where mild cramping is most likely to be felt. The catheter has a small balloon at its tip that is inflated slightly to hold it in place.
Dye Injection
Contrast dye is slowly injected through the catheter. As it fills the uterine cavity and begins to flow into the fallopian tubes, you may feel cramping or pressure — typically described as similar to moderate period pain in intensity. The sensation subsides once the injection stops.
X-ray Imaging
As the dye flows, the fluoroscopy machine captures real-time X-ray images. The radiologist and/or your fertility specialist can see immediately on the screen how the dye is moving. Typically 3–5 images are taken.
Procedure Ends and Equipment Removed
Once imaging is complete — usually within 15–20 minutes — the catheter and speculum are removed. You rest briefly in a recovery area (15–20 minutes) before getting dressed and leaving the clinic.
📌 How to read the dye flow
- Dye flows freely through both tubes and spills into the pelvic cavity → Both tubes are open (normal finding)
- Dye flows through one tube but stops in the other → One tube is blocked at the stopping point
- Dye fills the uterus but does not enter either tube → Both tubes are blocked at the cornual (uterine) end
- Dye fills the tube but pools and does not spill → Distal blockage; may indicate hydrosalpinx
- Dye shows irregular filling in the uterine cavity → May indicate polyps, fibroids, or uterine septum
When Is the HSG Test Done?
The HSG test is scheduled during a specific window in the menstrual cycle — Days 6 to 10. This timing is not arbitrary: it is chosen for two clinical reasons.
- After menstruation ends (from Day 6): The uterine lining is at its thinnest in the early follicular phase, providing the clearest X-ray images of the uterine cavity. Blood during menstruation would obscure imaging and risks contaminating the dye.
- Before ovulation (before Day 10–12): The test is completed before the egg is released. This avoids any interference with a potential conception in the same cycle and prevents the contrast dye from reaching a developing egg in the tube.
If your cycle is irregular or shorter than 28 days, your doctor will calculate the appropriate window. Contact the clinic on Day 1 or 2 of your period to schedule the appointment in time.
💡 Practical tip: Track your period start date and call the clinic on Day 1 or Day 2. Fertility clinics are accustomed to this and will book you quickly. Do not miss the window — you will need to wait for the next cycle if Days 6–10 pass without scheduling.
Is the HSG Test Painful?
This is the question most commonly asked about the HSG test. The honest answer is: most women experience mild to moderate cramping, similar to period pain, during and for a short time after the procedure. For most patients, this is manageable and short-lived.
💊 How to minimise discomfort
- Take ibuprofen 400–600mg approximately one hour before your appointment — this is the most effective single step and is routinely recommended
- Ask your doctor about a cervical anaesthetic spray (topical lignocaine) applied just before catheter placement — reduces insertion discomfort
- Breathe slowly and steadily during the procedure — conscious breathing reduces muscle tension and the perception of pain
- Tell the radiologist or doctor if discomfort becomes more than mild — the injection speed can be slowed, which reduces cramping
- Bring a sanitary pad to the clinic for light spotting afterwards
What the discomfort feels like
The most intense moment is typically during dye injection, when the uterus and tubes fill with fluid under slight pressure. This causes a cramping sensation that is, for most women, comparable to strong period pain at its peak — lasting 1–3 minutes while the dye is actively injected, and subsiding soon after. The catheter insertion through the cervix may cause a brief sharp cramp.
Mild to moderate cramping that continues for a few hours after the procedure is normal and usually resolves with ibuprofen. A small number of women experience more significant discomfort, particularly those with cervical stenosis or tube spasm. This is the minority experience, not the norm.
⚠️ Note: Online accounts of HSG experiences vary widely — some describe very little discomfort, others describe it as more significant. This variation is real and reflects genuine individual differences in pain tolerance, anatomy, and tube condition. The single most useful thing you can do is take ibuprofen well in advance. Arriving tense from anxiety tends to increase perceived pain; the more relaxed you can be, the more comfortable the experience will be.
What Do HSG Test Results Mean?
The radiologist and your fertility specialist interpret the X-ray images together. Results are usually available immediately after the procedure, with a formal written report within 24 hours. The findings fall into several broad categories:
| Finding | What It Means | Implication for Conception | Typical Next Step |
|---|---|---|---|
| Both tubes open; uterine cavity normal | No structural barrier to natural conception | Other causes of infertility should be evaluated (ovulation, sperm) | Continue investigations; may proceed with IUI or natural conception |
| One tube open, one tube blocked | Partial tubal factor; one route to the uterus is intact | Natural conception is possible through the open tube | Natural conception, timed intercourse, or IUI; IVF if other factors present |
| Both tubes blocked | Bilateral tubal occlusion; egg and sperm cannot meet naturally | Natural pregnancy not possible; IVF bypasses the tubes | Referral to IVF; laparoscopy for confirmation and possible surgical treatment |
| Hydrosalpinx (tube filled with fluid) | Distal tube blocked with fluid accumulation | Reduces IVF implantation rates; surgical management recommended first | Salpingectomy or tubal occlusion before IVF cycle |
| Uterine cavity abnormality (fibroids, polyp, septum) | Structural issue may affect implantation | Varies depending on size, location, and type | Hysteroscopy for definitive evaluation and treatment |
| Apparent blockage — possible spasm | Tube spasm (not true blockage) can appear identical to occlusion on HSG | May be a false positive; needs clinical correlation | Repeat HSG, sonosalpingography, or diagnostic laparoscopy for confirmation |
💡 Important about false positives: A result showing a blocked tube is not always a definitive diagnosis. The fallopian tube can go into temporary spasm during the test, making it appear blocked when it is actually patent. If your HSG shows unexpected blockage — particularly proximally (near the uterus) — your specialist may recommend a repeat test or further investigation before deciding on treatment. Do not make major decisions based on a single unexpected HSG result without specialist review.
Can the HSG Test Improve Fertility?
This is one of the more interesting — and honestly uncertain — aspects of the HSG test. Some studies, including a well-regarded randomised controlled trial published in the New England Journal of Medicine (2017), found that women who had an HSG with oil-based contrast dye had higher natural conception rates in the months following the procedure compared to those who had no HSG or used water-based dye.
The proposed mechanism is a "flushing effect" — the contrast dye may mechanically clear minor debris or mucus plugs from the tubes, or the oil-based dye may have an immunological effect on the uterine environment that briefly improves implantation conditions. This effect, if real, appears to be modest and temporary.
⚠️ Important clarification: The HSG is a diagnostic test. Any incidental fertility benefit is a potential secondary effect observed in some studies — it is not a fertility treatment, and the effect is not consistent enough to be relied upon. Women with true structural blockages will not achieve natural pregnancy from an HSG alone. The primary value of the test remains diagnostic.
Risks and Side Effects of the HSG Test
The HSG test is a well-established procedure with a low complication rate. Being aware of what is normal and what is not helps you respond appropriately after the test.
Expected and normal
- Mild to moderate cramping during the procedure and for a few hours after — normal muscle response to uterine filling
- Light vaginal spotting or bleeding for 1–2 days after — caused by catheter contact with the cervical or uterine lining
- Light vaginal discharge (from residual contrast dye) for 1–2 days — expected and harmless
- Dizziness or nausea briefly during the procedure in some patients — usually position-related and resolves quickly
Uncommon but possible
- Pelvic infection (<1% risk): The introduction of a catheter through the cervix carries a very small risk of ascending infection. Prophylactic antibiotics (typically doxycycline) reduce this risk further. If you develop fever, significant pelvic pain, or unusual discharge in the days after the test, contact your doctor promptly.
- Allergic reaction to contrast dye (<1% risk): Iodine-based contrast occasionally causes mild reactions (skin flushing, hives). Severe anaphylaxis is rare but possible. Inform your doctor before the test if you have any iodine allergy, seafood allergy, or prior contrast reaction.
- Contrast dye entering the bloodstream: If a tube is blocked and dye is injected under pressure, it can occasionally enter small vessels (intravasation). This is typically harmless but will be visible on imaging and noted by the radiologist.
When to seek medical attention after HSG: Contact your clinic or doctor if you experience fever above 38°C, increasing rather than decreasing pelvic pain, heavy vaginal bleeding (heavier than a normal period), or foul-smelling discharge in the 2–5 days following the procedure.
What Happens After the HSG Test?
Recovery from the HSG is usually straightforward. Here is what to expect in the hours and days following the procedure:
- Immediately after: You rest in the recovery area for 15–20 minutes. Cramping typically begins to ease. A sanitary pad is worn for any spotting or contrast dye discharge. You will be able to drive yourself home (unless you took a sedative, in which case arrange a driver).
- Same day: Most women return to normal daily activities including work. Ibuprofen 400mg every 6–8 hours as needed manages residual cramping. Avoid swimming or baths (stick to showers) for 24 hours.
- 2–3 days after: Any spotting and discharge should resolve. If you were prescribed a course of antibiotics, complete the full course.
- Follow-up consultation: Your fertility specialist will review the HSG results with you — usually within a few days of the procedure. This consultation determines the next steps in your fertility evaluation or treatment plan.
What Are the Next Steps After an HSG Test?
What happens next depends on what the HSG showed. Your specialist will discuss options with you — the following represents the general pathways:
Both Tubes Open — Normal Result
If both tubes are clear and the uterine cavity appears normal, the investigation continues to identify the cause of infertility. Remaining evaluations typically include hormonal testing (AMH, FSH, TSH), ovulation assessment, and — if not already done — a semen analysis for the male partner. Depending on findings, the next step may be timed intercourse, ovulation induction, or IUI.
One Tube Blocked — Partial Finding
With one open tube, natural conception remains possible. Your doctor may recommend continuing with natural conception or IUI while monitoring for any associated factors. If pregnancy does not occur within 3–6 months of conservative management, IVF may be discussed — particularly if age or ovarian reserve is a consideration.
Both Tubes Blocked — Full Evaluation Needed
Bilateral tubal blockage is typically confirmed by laparoscopy before major treatment decisions — partly because HSG can produce false-positive blockage results due to tubal spasm. Once confirmed, IVF is the most effective treatment path. Surgical options (laparoscopic repair) may be discussed for selected cases.
Uterine Cavity Abnormality Found
If the HSG suggests a structural issue inside the uterus (polyp, fibroid, septum), hysteroscopy is arranged — a same-day surgical procedure that allows direct visualisation and treatment of the uterine cavity. Addressing these abnormalities before fertility treatment improves implantation outcomes.
When Should You Consider an HSG Test?
The following situations represent appropriate clinical indications for requesting or discussing an HSG test:
- Trying to conceive for 12 months (under 35) or 6 months (over 35) without success — standard threshold for initiating infertility evaluation
- History of pelvic inflammatory disease (PID) or sexually transmitted infections — these are leading causes of tubal damage, requiring tubal assessment
- Previous ectopic pregnancy — significantly increases the risk of fallopian tube scarring and future ectopic
- History of abdominal or pelvic surgery (appendectomy, ovarian cyst removal, Caesarean section) — scar tissue risk
- Endometriosis diagnosis — can involve the tubes and affect fertility through adhesions
- Recurrent miscarriage (two or more) — a uterine cavity assessment via HSG can identify structural abnormalities that may be contributing
- Before starting IUI treatment — IUI requires at least one open tube; confirming patency before the procedure is standard practice at most clinics
How Fertility Network Helps You After Diagnosis
Once you have your HSG results, the next step is a specialist consultation to interpret them in context and outline your treatment options. FertilityNetwork can help you find verified clinics and access decision-support information:
Blocked Fallopian Tubes Guide
Causes, treatment, and what a blockage diagnosis means for your fertility
IVF Treatment Guide
How IVF works when tubes are blocked — process, cost, success rates
How to Choose a Clinic
A structured framework for evaluating fertility specialists
AMH Test Guide
Ovarian reserve testing — typically ordered alongside an HSG
Fertility Centres in Bangalore
Verified clinics offering HSG testing and fertility evaluation
IVF Cost Estimator
Estimate treatment costs if the HSG indicates IVF is needed
FAQs About the HSG Test
Is the HSG test safe?
Yes. The HSG test has a strong safety record and is widely performed in fertility clinics and radiology departments across India. Radiation exposure is minimal and the iodine-based contrast dye is cleared from the body quickly. The risk of serious complications — such as pelvic infection or allergic reaction — is less than 1%. Inform your doctor beforehand if you have a known iodine allergy or an active pelvic infection.
Can I go to work after an HSG test?
Most women resume normal activities, including work, on the same day. The procedure takes 15–30 minutes and requires no sedation. Mild cramping or light spotting for a few hours after is expected. Some women choose to rest for the remainder of the day; this is a personal preference rather than a medical requirement.
Does the HSG test guarantee pregnancy?
No. The HSG is a diagnostic test — it identifies whether your fallopian tubes are open and whether the uterine cavity has any structural issues. It does not treat infertility or guarantee conception. Some research suggests a mild fertility benefit in the months following an HSG (the "flushing effect"), but this is not consistent enough to rely on as treatment.
How long does the HSG test take?
The active procedure takes 15–30 minutes. Plan for approximately 1–1.5 hours at the clinic in total, including arrival, preparation, the procedure itself, and a short rest period before discharge.
Is anaesthesia required for an HSG test?
No. HSG does not require general or regional anaesthesia. Most patients experience mild to moderate cramping, similar to period discomfort. Taking ibuprofen 400–600mg about one hour before the test significantly reduces discomfort. If you are particularly concerned, ask your doctor in advance about a cervical anaesthetic spray or mild oral sedative — some clinics offer these.
When in my cycle should I get an HSG test?
The HSG is performed between Days 6 and 10 — after your period ends (so the uterine lining is thin for clear imaging) and before ovulation. Your doctor will confirm the exact timing based on your cycle length.
What if my HSG shows a blocked tube?
One blocked tube does not prevent natural conception — the other tube may still function normally. If both tubes are blocked, natural conception is not possible, but IVF is an effective treatment because it bypasses the fallopian tubes entirely. Your doctor will review the full HSG images and results alongside your clinical history before recommending next steps. Note: apparent blockage can sometimes be tubal spasm rather than true occlusion — your doctor will advise if a repeat test is needed.
How much does the HSG test cost in India?
The HSG test costs approximately ₹3,000 to ₹8,000 in India depending on the city, facility type, and whether it is done at a fertility clinic or hospital radiology department. The fee typically includes the contrast dye, catheter, X-ray imaging, and a radiologist report. Consultation fees are usually charged separately.
Find Clinics Offering HSG Testing Near You
HSG is available at most fertility clinics and radiology departments. Use our directories to find a specialist who can order the test and interpret results correctly:
Fertility Centres in Mumbai
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Fertility Centres in Delhi
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Fertility Centres in Bangalore
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Fertility Centres in Chennai
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Fertility Centres in Hyderabad
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Fertility Centres in Kolkata
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Fertility Centres in Pune
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Fertility Centres in Ahmedabad
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Fertility Centres in Bangalore
Clinics offering HSG, tubal evaluation & IVF across Bangalore
IVF Clinics in Marathahalli
Fertility centres in Marathahalli, Bangalore — contact details included
Related Guides
Blocked Fallopian Tubes
Causes, symptoms, diagnosis, and treatment options explained
AMH Test Guide
Ovarian reserve test — what it measures and what it cannot
Semen Analysis
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What Is IVF Treatment?
Full IVF guide — process, cost, success rates in India
All Fertility Tests
Complete pre-treatment workup for men and women
Choosing a Fertility Clinic
Structured guide to evaluating clinics before you commit