references
  
      FDA: "CFR - Code of Federal Regulations Title 21"
    
      Celiac Disease Foundation: "Sources of Gluten"
    
      National Celiac Association: "Airborne Gluten"
    
      FDA: "Gluten and Food Labeling"
    
      GFCO: "About Us"
    




Regular ketchup is usually gluten-free but watch out for specialty flavors.

Image Credit: bhofack2/iStock/GettyImages

Image Credit: bhofack2/iStock/GettyImages

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      FDA: "CFR - Code of Federal Regulations Title 21"
    
      Celiac Disease Foundation: "Sources of Gluten"
    
      National Celiac Association: "Airborne Gluten"
    
      FDA: "Gluten and Food Labeling"
    
      GFCO: "About Us"