Know Instantly If Your Food
Contains Hidden Gluten.
Gluten hides behind 30+ ingredient names, and recipes change without warning. Check Gluten's AI reads the full ingredient list for you — flagging hidden gluten and cross-contamination risks in seconds, so you can shop and eat with confidence.
Free PDF: 20 Hidden Gluten Sources
Gluten Laws & Safety Differ Worldwide
Did you know oatmeal, soy sauce, and restaurant labeling are regulated differently in the US, Europe, and Australia? Explore guidelines tailored to your location.
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Gluten-Free in Italy
Timezone-assisted regional profile
Local Rules & Regulations
Exceptional celiac standards. AIC-certified restaurants are legally audited. Pharmacies sell GF food.
🍻 Beer & Barley Standards
Enzymatically gluten-removed beers are sold as gluten-free under 20ppm.
Check Beer RulesTraveling soon? Grab our translation cards and check curated city guides.
View Italy Travel GuideWhy Reading Labels Isn't Always Enough
Even careful, experienced label-readers still get glutened. The reason isn't carelessness — it's that the tools most people rely on have real, structural blind spots. Here's where they fall short, and how AI helps close the gap.
Manual Reading Fails
Human eyes get tired. Formulas change without warning. No person alive can reliably decode industrial biochemical nomenclature on microscopic text, every single time, with zero margin for error. You shouldn't have to have a PhD in chemistry to eat safely.
Barcode Apps Fail
Every tool you've tried before—barcode apps, static databases—relies on outdated information submitted by volunteers. When a manufacturer quietly changes an ingredient, the barcode stays exactly the same. The app says it's safe. You get sick.
The Paradigm Shift
Check Gluten is an AI trained specifically on the chemistry of hidden gluten. It doesn't rely on barcodes or old databases. It reads the raw, real-time ingredient text right in front of you, instantly catching what human eyes and databases miss.
Trusted by 10,000+ Celiacs Worldwide
Join the growing community of celiacs who use Check Gluten to shop, cook, and eat out with confidence every single day.
"I scan everything before it goes in the cart. Caught gluten in a 'natural flavoring' I never would have noticed. This app is a lifesaver for my celiac daughter."
— Sarah M., Celiac Mom
"Diagnosed 6 months ago and was terrified of grocery shopping. Check Gluten made it so simple — scan, check, done. Worth every penny of the premium plan."
— James T., Newly Diagnosed
"Used it traveling through Italy and Japan. Scanned labels in languages I can't read and the AI caught gluten every time. Essential travel tool for celiacs."
— Lisa K., GF Traveler
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Cost of 1 Glutening Event
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- Unlimited gluten checks
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Gluten-Free Resources
Expert guides trusted by thousands of celiacs worldwide. Start free, upgrade when ready.
Never Eat Alone Again
Complete celiac guide to dining out, traveling, and living without limits.
The Cookbook Bundle
500+ delicious recipes, baking masterclass, and 4 weeks of meal plans.
Ultimate Celiac Bundle
Both guides + cookbook — 500+ recipes, meal plans, travel guides, everything.
Gluten-Free Knowledge Base
Expert guides to help you navigate gluten-free living with confidence.
How to Explain Celiac Disease to Friends and Family (Without the Drama)
How to explain celiac disease to friends and family who don't get it. Scripts, analogies, and handling the "a little won't hurt" crowd.
Gluten-Free Dating: How to Navigate Restaurants, Relationships, and Rejection
Dating with celiac disease: when to tell your date, how to handle restaurants, and the GF kiss question answered.
The 5 Stages of Celiac Grief: Why Your Diagnosis Feels Like a Loss
A celiac diagnosis triggers real grief. Understanding the 5 stages and how to move through them toward acceptance.
Celiac Disease Symptoms Checklist
The complete checklist of symptoms to help identify celiac disease early.
Your Partner Has Celiac: The Honest Guide
Everything spouses and partners need to know about living with a celiac.
GF Meal Prep: Cook Once, Eat All Week
The Sunday System that cuts your cooking from 14 hours to 2.
I Accidentally Ate Gluten: What to Do Now
Step-by-step guide for what to do right now if you've been glutened.
Understanding Gluten
Essential knowledge for anyone with celiac disease, gluten sensitivity, or following a gluten-free diet.
What Is Gluten?
Gluten is a family of storage proteins found naturally in wheat, barley, rye, and triticale. The two main proteins in gluten are glutenin and gliadin — gliadin is responsible for most of the negative health effects in people with celiac disease.
When flour is mixed with water, gluten proteins form a sticky, elastic network that gives bread its chewy texture, helps dough rise, and provides structure to baked goods. This is why gluten-free baking requires different techniques and substitutes.
For the approximately 1 in 100 people worldwide who have celiac disease, even trace amounts of gluten (as little as 20 parts per million) can trigger an autoimmune reaction that damages the small intestine's lining, leading to nutrient malabsorption and a wide range of symptoms.
Who Needs to Avoid Gluten?
Celiac Disease
An autoimmune disorder where gluten triggers immune attacks on the small intestine. Affects roughly 1% of the population. Requires strict, lifelong avoidance of all gluten — even trace amounts from cross-contamination.
Non-Celiac Gluten Sensitivity
Causes symptoms similar to celiac disease (bloating, fatigue, headaches) but without intestinal damage. Estimated to affect 6–7% of the population. Diagnosis is by exclusion after ruling out celiac disease and wheat allergy.
Wheat Allergy
An allergic reaction to proteins in wheat (not limited to gluten). Can cause hives, difficulty breathing, or anaphylaxis. Most common in children and often outgrown by adulthood.
Dermatitis Herpetiformis
A chronic skin condition directly linked to celiac disease. Causes intensely itchy blisters, typically on elbows, knees, and buttocks. Resolves with a strict gluten-free diet.
30+ Hidden Names for Gluten on Food Labels
Gluten isn't always listed as "gluten." These ingredients all contain or may contain gluten — and Check Gluten's AI catches every one of them.
Definite Gluten Sources
- • Wheat (and all varieties: durum, spelt, kamut, einkorn, farro, emmer)
- • Barley
- • Rye
- • Triticale (wheat-rye hybrid)
- • Malt, malt extract, malt flavoring
- • Brewer's yeast
- • Wheat starch (unless specifically labeled gluten-free)
- • Semolina
- • Bulgur
- • Couscous
- • Seitan (pure wheat gluten)
May Contain Gluten
- • Modified food starch (may be from wheat)
- • Hydrolyzed vegetable protein
- • Natural flavors / artificial flavors
- • Dextrin (sometimes from wheat)
- • Caramel color (rarely from barley)
- • Maltodextrin (usually safe, but check source)
- • Textured vegetable protein
- • Seasonings (may contain wheat flour)
- • Soy sauce (traditionally made with wheat)
- • Teriyaki sauce
Safe Alternatives
- • Rice (all varieties)
- • Corn and cornstarch
- • Quinoa
- • Buckwheat (despite the name, no wheat)
- • Millet
- • Amaranth
- • Teff
- • Arrowroot
- • Tapioca / cassava
- • Potato starch
- • Certified gluten-free oats
Can't memorize all these? That's exactly why Check Gluten exists. Our AI knows 500+ gluten-related ingredients and checks every one in under 3 seconds. Try it free →
Celiac Disease by the Numbers
people worldwide have celiac disease
of celiacs are undiagnosed or misdiagnosed
average time to get a correct diagnosis
threshold for "gluten-free" labeling (FDA)
Frequently Asked Questions
Everything you need to know about checking food for gluten with Check Gluten.
How does Check Gluten detect gluten in food?+
Check Gluten uses AI to read the full ingredient list on a food label or menu — either from a photo you take or text you paste. It analyzes every ingredient against 500+ gluten-related terms, including 30+ names that hide gluten (like malt, hydrolyzed wheat protein, and modified food starch), then returns a clear green (safe), yellow (caution), or red (contains gluten) result with an explanation.
Is Check Gluten free to use?+
Yes. You can run up to 3 free gluten checks per day with no account required. Premium ($4.99/month billed annually, or $12.99/month) adds unlimited scans, saved scan history, a personal safe-product list, deeper chemical analysis, and an ad-free experience. A 14-day free trial is available on the monthly plan.
Can it catch hidden gluten and cross-contamination risks?+
Yes. Unlike barcode-scanning apps that rely on databases that go out of date when manufacturers change recipes, Check Gluten reads the actual ingredient text in front of you. It flags hidden gluten sources such as malt flavoring, brewer’s yeast, and wheat-based soy sauce, and highlights ingredients that carry a cross-contamination risk.
Does it work on restaurant menus and foreign-language labels?+
Yes. Check Gluten works on packaged food labels, restaurant menus, and labels in many languages, which makes it especially useful when traveling. Photograph or paste the text and the AI analyzes it for gluten and cross-contamination risks.
What’s the difference between celiac disease and gluten sensitivity?+
Celiac disease is an autoimmune disorder (about 1 in 100 people) in which gluten triggers the immune system to damage the small intestine — even trace amounts can cause harm, so strict lifelong avoidance is required. Non-celiac gluten sensitivity causes similar symptoms without the intestinal damage and affects an estimated 6–7% of people. Both benefit from carefully checking ingredient labels.
How accurate is Check Gluten?+
Check Gluten’s AI is trained to recognize 500+ gluten-related ingredients and the 30+ alternate names gluten hides behind on labels. It’s a fast, reliable assistant for reading labels — but not a substitute for medical advice or a manufacturer’s allergen statement. If you have celiac disease, always confirm with the product’s official allergen labeling when in doubt.
Celiac Safety Glossary
- Celiac disease
- Celiac disease is a serious autoimmune disorder in which ingesting gluten — a protein found in wheat, barley, and rye — triggers an immune response that damages the small intestine's villi, affecting approximately 1 in 100 people worldwide according to the Celiac Disease Foundation.
- Gluten
- Gluten is a family of storage proteins (prolamins and glutelins) found naturally in cereal grains like wheat (including varieties like spelt, kamut, and farro), barley, and rye, which acts as a binder to give food elasticity and shape.
- Cross-contamination
- Cross-contamination (or cross-contact) occurs when gluten-free food comes into contact with gluten-containing food or surfaces — such as shared cutting boards, toasters, fryers, or utensils — rendering otherwise safe food dangerous for people with celiac disease.
- Gluten-free certification
- Gluten-free certification, such as the GFCO (Gluten-Free Certification Organization) seal, verifies that a product contains fewer than 10 parts per million (ppm) of gluten — stricter than the FDA's 20 ppm threshold for "gluten-free" labeling.
- Parts Per Million (ppm)
- Parts per million (ppm) is a unit of measurement used to quantify gluten concentration. Labeling laws in the US and Europe permit a maximum threshold of 20 ppm, while Australia requires no detectable gluten (0 ppm).
- Avenin (Oats)
- Avenin is a protein found in oats that is structurally similar to gluten. While most celiacs can tolerate pure, uncontaminated oats, a small percentage of celiacs react to avenin itself.
- Malt (Barley)
- Malt is fermented barley used as a flavoring or sweetener in cereals, chocolates, and beer; it is a major source of hidden gluten that is often overlooked on ingredient lists.
- Wheat starch
- Wheat starch is wheat flour that has had the gluten protein washed out. While some European gluten-free foods use codex-grade wheat starch (tested below 20 ppm), it can still trigger reactions in sensitive individuals.
- Brewer's yeast
- Brewer's yeast is a byproduct of beer brewing that is heavily contaminated with gluten from barley; it is a common hidden ingredient in savory snacks and seasonings.
You Deserve to Eat Without Fear
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