Gallstones are hardened deposits of digestive fluid that form in your gallbladder, and figuring out if you have them comes down to recognizing specific pain patterns and getting the right imaging tests. The most reliable way to determine if you have gallstones is through an abdominal ultrasound, which detects them with over 95% accuracy. But before you get to that test, your body usually sends clear signals — sudden pain in the upper right abdomen, pain between your shoulder blades, or a gallbladder attack after a fatty meal. If you have these symptoms, a doctor can confirm the diagnosis quickly.
What Are the Most Common Symptoms of Gallstones?
About 80% of people with gallstones never have symptoms. These are called “silent gallstones” and typically do not need treatment. The other 20% experience what doctors call biliary colic — a distinct type of pain that is hard to ignore.
The classic symptom is a sudden, intense pain in the upper right part of your abdomen, just below your ribcage. This pain can also radiate to your right shoulder blade or the middle of your back. It often starts after a heavy or fatty meal, especially in the evening. The pain usually lasts from 30 minutes to several hours and then fades on its own.
Other symptoms can include nausea, vomiting, bloating, and indigestion. But here is what many online articles get wrong: burping, gas, and general stomach upset are not reliable signs of gallstones. These symptoms are so common with other digestive issues that they do not help with diagnosis. The key distinguishing feature is the location and intensity of the pain.
If a gallstone blocks the bile duct for longer, you may develop more serious symptoms like jaundice (yellowing of the skin or eyes), dark urine, clay-colored stools, or fever with chills. These signs point to a complication such as cholecystitis (inflamed gallbladder) or cholangitis (infected bile duct), and they require immediate medical attention.
How Do Doctors Diagnose Gallstones?
The diagnosis process is straightforward and usually quick. Your doctor will start with a physical exam and ask about your symptoms, especially the pain pattern. They may press on your upper right abdomen to check for tenderness. The Murphy sign — when you stop breathing in as the doctor presses on your gallbladder area — is a classic physical finding for gallbladder inflammation.
The gold standard test is an abdominal ultrasound. This is painless, uses no radiation, and takes about 30 minutes. The technician slides a wand over your abdomen, and sound waves create images of your gallbladder. Ultrasound finds gallstones with 95-98% accuracy, according to the American College of Gastroenterology. It can also show signs of inflammation, thickening of the gallbladder wall, or a dilated bile duct.
If the ultrasound is unclear or your doctor suspects a stone stuck in the bile duct, they may order additional tests. A HIDA scan uses a radioactive tracer to track bile flow from your liver through your gallbladder and into your small intestine. An MRCP (magnetic resonance cholangiopancreatography) is an MRI that provides detailed images of the bile ducts. An ERCP (endoscopic retrograde cholangiopancreatography) is both diagnostic and therapeutic — it uses an endoscope to find and remove stones blocking the bile duct.
Blood tests are also routine. Elevated liver enzymes, bilirubin, or pancreatic enzymes can indicate that a stone is causing a blockage or has moved into the common bile duct. High white blood cell count suggests infection or inflammation.
When Should You See a Doctor for Gallstone Symptoms?
Not every gallbladder pain requires a trip to the emergency room. But there are clear guidelines on when to seek care. If you have pain that is severe enough to keep you from sitting still or finding a comfortable position, see a doctor within 24 hours. If the pain is accompanied by fever, chills, jaundice, or vomiting that prevents you from keeping fluids down, go to the emergency department immediately.
The American Gastroenterological Association recommends that anyone with symptoms of biliary colic — even if the pain passes — should see their primary care doctor for evaluation. The reason is simple: gallstones can cause complications even if the pain goes away on its own. A stone that moves and then drops back into the gallbladder can still cause scarring, thickening, and eventually more serious problems.
People with diabetes should be especially careful. Gallbladder infections can escalate quickly in diabetic patients, and the symptoms may be less obvious. If you have diabetes and any upper abdominal pain, do not wait to see if it passes.
Pregnant women can also develop gallstones, especially in the second and third trimesters. Hormonal changes slow gallbladder emptying and increase cholesterol in bile. If you are pregnant and have right-sided abdominal pain, your obstetrician can order an ultrasound — it is safe during pregnancy.
How To Determine If You Have Gallstones Signs Diagnosis: What the Research Shows
Research published in the journal Gut found that the combination of typical pain plus a positive ultrasound result has a diagnostic accuracy above 97%. That means if you have the classic pain pattern and an ultrasound shows stones, you almost certainly have gallstones causing your symptoms. The challenge comes when symptoms are atypical.
A 2019 study in JAMA Surgery looked at patients who had gallbladder surgery for suspected gallstones. About 10% of them had no stones found during surgery — their symptoms were caused by something else. This highlights why a thorough workup matters. Conditions that mimic gallstones include peptic ulcers, pancreatitis, hepatitis, gastroesophageal reflux disease, and irritable bowel syndrome.
The timing of your ultrasound also matters. If you have symptoms but the ultrasound is done when you are pain-free, small stones or sludge can be missed. Some studies suggest that repeating the ultrasound during an episode of pain improves detection. If your doctor suspects biliary colic but the first ultrasound is negative, a repeat scan or a HIDA scan may be warranted.
Another research finding worth noting: the size and number of gallstones do not predict symptom severity. A single 2-millimeter stone can cause excruciating pain if it gets stuck, while dozens of larger stones may cause no symptoms at all. The problem is not the stone itself — it is whether the stone blocks the flow of bile.
What Are the Risk Factors for Gallstones?
Knowing your risk helps you understand whether your symptoms are likely to be gallstones. The most common risk factors follow a pattern that doctors call the “four Fs” — female, forty, fertile, and fat. This is an oversimplification but captures the main trends.
Women are twice as likely as men to develop gallstones. Estrogen increases cholesterol in bile, and progesterone slows gallbladder emptying. Pregnancy, hormone replacement therapy, and birth control pills all raise risk. The risk increases with age — after 40, the incidence climbs steadily. By age 60, about 20% of women and 10% of men have gallstones.
Obesity is a major risk factor. Excess body weight increases cholesterol production in the liver, which leads to supersaturated bile that forms stones. Rapid weight loss is also a risk — losing more than 1.5 kilograms per week can cause the liver to secrete extra cholesterol into bile. This is why people who have bariatric surgery sometimes develop gallstones in the months afterward.
Other risk factors include a family history of gallstones, Native American or Hispanic ethnicity, diabetes, cirrhosis, and certain blood disorders like sickle cell disease. Diet also plays a role — diets high in refined carbohydrates and low in fiber are associated with higher gallstone risk.
| Risk Factor | Relative Impact | Why It Matters |
|---|---|---|
| Female sex | 2x higher risk | Estrogen increases cholesterol in bile |
| Age over 40 | Risk increases steadily | Gallbladder function changes with age |
| Obesity (BMI >30) | 3-4x higher risk | More cholesterol produced by liver |
| Rapid weight loss | Significant short-term risk | Extra cholesterol released during fat loss |
| Family history | 2-3x higher risk | Genetic factors affect bile composition |
| Diabetes | 2x higher risk | Altered fat metabolism and gallbladder motility |
What Tests Can You Expect During a Gallstone Workup?
If you go to your doctor with suspected gallstones, here is what a typical workup looks like. First, a history and physical exam. Your doctor will ask about the pain — where it is, how intense, what brings it on, and how long it lasts. They will ask about nausea, vomiting, and any changes in your stool or urine color.
Then comes blood work. A complete blood count checks for infection. A comprehensive metabolic panel looks at liver enzymes, bilirubin, and pancreatic enzymes. If your alkaline phosphatase and bilirubin are elevated, that suggests a stone may be blocking the bile duct. If your amylase and lipase are high, the stone may have caused pancreatitis — inflammation of the pancreas.
The ultrasound is next. You will be asked to fast for 6-8 hours before the test so your gallbladder is full and easier to image. The technician will ask you to lie still and hold your breath at certain points. The test is painless and takes about 30 minutes. You get results immediately — the radiologist reads the images and sends a report to your doctor, usually within 24 hours.
If the ultrasound shows gallstones but your symptoms are mild, your doctor may take a “watch and wait” approach. If the stones are causing pain or complications, the standard treatment is laparoscopic cholecystectomy — surgical removal of the gallbladder. This is one of the most common surgeries performed in the United States, with over 700,000 done each year. Recovery is usually quick, with most people going home the same day.
For people who cannot have surgery, oral medications like ursodeoxycholic acid can dissolve small cholesterol stones over months or years. But this only works for small, non-calcified stones, and the stones often return once the medication stops. Shock wave lithotripsy — breaking stones with sound waves — is rarely used for gallstones anymore because it has a high recurrence rate.
Common Misconceptions About Gallstone Diagnosis
One of the most persistent myths is that gallstones always cause pain. As mentioned, 80% of people with gallstones never have symptoms. You can have a gallbladder full of stones and never know it. That is why routine screening for gallstones is not recommended — there is no benefit to treating silent stones.
Another myth is that gallbladder “cleanses” or “flushes” can remove stones. This is widely claimed online but has no clinical evidence to support it. The National Institutes of Health states that there is no scientific basis for gallbladder cleansing. These protocols — which often involve drinking olive oil, lemon juice, and Epsom salts — can cause diarrhea, dehydration, and electrolyte imbalances. The “stones” people pass during these cleanses are actually soap-like clumps formed by the oil and juice mixing in the digestive tract.
A third misconception is that you need your gallbladder to digest food. You do not. The gallbladder stores bile, but the liver produces it. After gallbladder removal, bile drips continuously into the small intestine instead of being released in bursts. Most people adapt within weeks. Some have looser stools initially, but this usually resolves. Long-term digestive problems after gallbladder removal are uncommon.
Finally, some people believe that avoiding fatty foods will prevent gallstone attacks. While fatty meals can trigger attacks in people who already have stones, a low-fat diet does not prevent stones from forming. In fact, very low-fat diets may actually increase the risk of gallstones by reducing gallbladder emptying. The gallbladder needs to contract regularly to stay healthy.
Frequently Asked Questions
Can a blood test detect gallstones?
No, blood tests cannot directly detect gallstones, but they can show signs of blockage or infection like elevated liver enzymes or white blood cell count.
How long does a gallbladder attack last?
A typical gallbladder attack lasts from 30 minutes to several hours and often happens after a fatty meal.
Can you have gallstones without pain?
Yes, about 80% of people with gallstones have no symptoms at all and are diagnosed incidentally during an ultrasound for another reason.
Is an ultrasound the only way to diagnose gallstones?
Abdominal ultrasound is the most common and accurate test, but doctors may also use HIDA scans, MRCP, or ERCP if the ultrasound is unclear.

