To make this Turkey and Rice Soup gluten free, use turkey broth or chicken broth that is certified gluten free or clearly labeled gluten free. Verify that the dried herbs, bay leaf, black pepper, salt, and cooked turkey are free from gluten-containing additives. Long-grain white rice is naturally gluten free, but check the package for cross-contact warnings if needed. Use clean cookware, utensils, and serving bowls to prevent cross-contact with gluten-containing foods.