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Your child's pediatric gastroenterologist has recommended celiac testing, and now the questions start piling up. Will it mean a needle? Does the thought of a scope feel overwhelming? Should everyone stop buying bread until the results come back?
Knowing the steps ahead of time can make the process feel less stressful, for parents and for kids. Celiac disease testing follows a fairly predictable path, and one detail in particular- what your child eats before the tests- can change whether the results can be trusted.
Celiac disease is most common among children in a few higher-risk groups, including those with a close relative who has the condition and those with type 1 diabetes, autoimmune thyroid disease, Down syndrome, Turner syndrome, or Williams syndrome. Testing may also come up when a child has recurring abdominal pain, ongoing diarrhea or constipation, changes in bowel habits, poor weight gain, slow growth, delayed puberty, or unexplained iron deficiency anemia.
Having one of these does not mean a child has celiac disease. It means the question is worth answering properly, and testing is how that happens.
Testing usually begins with a visit to review symptoms, growth, diet, and family history, followed by a blood draw. The main test looks for tTG-IgA, an antibody the immune system can produce in response to gluten. Total IgA is typically checked at the same time, because a child who makes very little IgA can show a falsely negative result even when celiac disease is present. Children under age two may need additional antibody tests.
The blood draw itself is brief. Tell your child what to expect, let them ask questions, and ask the office ahead of time whether any fasting or medication changes are needed.
Yes, and this is the part families most often get wrong. The blood tests and biopsies look for the immune response and intestinal changes that gluten triggers, so a child needs to be eating gluten regularly for the results to mean anything. Cutting gluten out beforehand can make results look normal even when celiac disease is present.
If your child has already cut back or stopped, that is common. Share exactly what changed and when. Any plan to restart gluten for testing should come from a pediatric gastroenterologist, since how much and for how long depends on the child.
A little preparation makes the visit more useful. While your child's regular diet continues, keep a simple log of what they eat, when symptoms appear, and any changes in bowel habits, such as ongoing diarrheaor constipation. Write down which relatives have celiac disease, type 1 diabetes, or thyroid conditions, since family history helps guide testing.
For your child, plain language works best. Explain that a small blood sample, and sometimes a camera exam done while they are asleep, will help the care team find out why their stomach hurts. Older kids and teens often feel calmer when they help plan the day.
A high tTG-IgA result raises concern for celiac disease, but in most cases it is not the final answer. A normal result is reassuring, though it does not fully close the door if a child was not eating gluten, has low IgA, or is very young and still has symptoms.
Results are read alongside symptoms, growth, and family history. Because a blood test alone can point toward celiac disease without confirming it, the next step is often a closer look at the small intestine.
An upper endoscopy, also called an EGD, lets a pediatric gastroenterologist examine the lining of the esophagus, stomach, and first part of the small intestine. A thin, flexible tube with a tiny camera is passed through the mouth while the child is under anesthesia, and small tissue samples, called biopsies, are taken from the small intestine to check for the damage celiac disease can cause. In most cases, this is how the diagnosis is confirmed.
Anesthesia is given by a pediatric anesthesiologist, who usually calls the evening before to review preparation. You will get specific instructions about eating and drinking beforehand. You can read more about what the procedure involves in this overview of EGD in children.
Once results are back, the care team reviews them with you and explains what they mean for your child. If celiac disease is confirmed, treatment centers on a gluten-free diet that continues for life, guided by a pediatric gastroenterologist. If celiac disease is not the cause, the search for answers continues, since other conditions can produce similar symptoms. Either way, the results give your family a clearer place to start.
For a fuller picture of symptoms, diagnosis, and treatment, see this guide to celiac disease in children.
Waiting on test results can feel long, and cutting out foods in the meantime is tempting. But changing your child's diet too early can blur the very results that lead to a clear answer, and leaving symptoms unexplained can affect a child's comfort, growth, and nutrition over time.
Clear answers come from testing done in the right order, not from trial and error at home. Dr. Mona Dave, a pediatric gastroenterologist in Frisco, TX, can walk your family through each step of celiac disease evaluation and care, from the first blood test to any follow-up. Schedule an appointment to talk through your child's symptoms and next steps.
