Caputo Fioreglut is labeled gluten-free and meets the regulatory threshold of less than 20 parts per million (ppm) of gluten, which is the international standard for gluten-free foods. For most people with celiac disease, products that consistently test below 20 ppm are considered safe. But the answer has a few layers worth understanding, because this flour is made from wheat, and that distinction matters.
What’s Actually in Caputo Fioreglut
The full ingredient list is: gluten-free wheat starch, dextrose, maize starch, buckwheat flour, rice starch, psyllium seed fiber, thickener, guar, and flavoring. The first and most prominent ingredient is wheat starch that has been processed to remove gluten. This is the part that raises eyebrows for people with celiac disease, and understandably so. Seeing “wheat” on a product you rely on being gluten-free can feel like a red flag.
The processing works by washing wheat flour repeatedly to separate the starch granules from the gluten proteins. What remains is a refined starch with only trace amounts of gluten. The rest of the blend uses naturally gluten-free starches from corn and rice, plus buckwheat flour (which, despite the name, is not related to wheat and contains no gluten). Psyllium and guar act as binders to help mimic the stretchy texture that gluten normally provides in baking.
How the 20 ppm Standard Works
The FDA requires any food labeled “gluten-free” in the United States to contain less than 20 ppm of gluten. That translates to 20 milligrams of gluten per kilogram of food. This threshold was chosen because scientific evidence shows it is the level at which the vast majority of people with celiac disease do not experience intestinal damage.
When a product like Fioreglut uses wheat starch as an ingredient, the FDA has a specific additional requirement. The label must include a statement explaining that the wheat has been processed to meet FDA gluten-free requirements. This is why you’ll see an asterisk or note near the ingredient list clarifying the wheat starch situation. If the product didn’t include that clarification, the FDA would consider it misbranded.
The European standard is identical at 20 ppm, and Caputo is an Italian company that manufactures under EU regulations. Products containing deglutenized wheat starch have a longer track record in Europe, where they’ve been part of celiac-safe food programs for decades. In countries like Finland and Italy, wheat starch-based gluten-free products have been routinely included in celiac dietary guidelines.
Why Some People With Celiac Are Cautious
The 20 ppm threshold is a regulatory line, not a biological one. Most celiac patients tolerate foods under 20 ppm without measurable intestinal harm, but individual sensitivity varies. A small number of people with celiac disease react to gluten levels well below 20 ppm, and for those individuals, a product derived from wheat may carry more risk than one made entirely from naturally gluten-free grains like rice or sorghum.
There’s also the question of cumulative exposure. If you eat multiple servings of foods that each contain trace gluten close to the 20 ppm limit, your total daily gluten intake can add up. Flour is a high-volume ingredient. You might use a cup or more in a single recipe, which means you’re consuming more of it by weight than you would a gluten-free cracker or cereal. For people who are especially sensitive or who have had difficulty getting their celiac under control, sticking to flours made from inherently gluten-free grains can provide an extra margin of safety.
That said, many people with well-managed celiac disease use Fioreglut and similar wheat starch-based products without issues. The flour is popular specifically because it produces pizza dough and bread with a texture closer to traditional wheat baking, something that purely gluten-free grain flours struggle to replicate.
Wheat Allergy Is a Different Story
If you have a wheat allergy rather than celiac disease, Caputo Fioreglut is not safe for you. This is a critical distinction. Celiac disease is an autoimmune response triggered specifically by gluten proteins. A wheat allergy is an immune reaction to proteins in wheat, and the allergenic proteins are not always the same ones as gluten. Removing gluten from wheat starch does not remove all wheat proteins.
Wheat allergy reactions can include hives, swelling, difficulty breathing, and in severe cases, anaphylaxis. These are immediate immune responses that are fundamentally different from the slow intestinal damage caused by celiac disease. A product labeled “gluten-free” that contains wheat-derived ingredients is still a wheat-containing product, and allergen labeling rules require it to be identified as such.
How to Decide If It’s Right for You
Your comfort level with Caputo Fioreglut depends on where you fall on the sensitivity spectrum. If your celiac disease is well controlled, your follow-up bloodwork has been normal, and you tolerate other products at the 20 ppm threshold without symptoms, Fioreglut is a compliant gluten-free product that meets the same regulatory standard as any other gluten-free labeled food.
If you’re newly diagnosed, still healing, or have had persistent symptoms or elevated antibodies despite following a gluten-free diet, you may want to choose flours made entirely from naturally gluten-free ingredients. Rice flour, tapioca starch, sorghum flour, and similar options carry zero risk of residual gluten from wheat processing. Independent testing services like Gluten Free Watchdog periodically test products and publish results, which can help you verify that specific brands and batches meet their labeled claims.
The flour is certified gluten-free and legally compliant in both the US and EU markets. For the majority of people managing celiac disease, it falls within the accepted safety range. The wheat starch origin is disclosed on the label precisely so you can make an informed choice based on your own tolerance and comfort level.