Thank you for your recent inquiry.
Unfortunately I am not sure there is a "standard" soy-free salad dressing. At least I have never been aware of one. In addition, a search of the Food Allergy and Anaphylaxis Network failed to reveal any reference to soy-free salad dressing.
However, I did find two references on the Internet which state that there are soy-free dressings. I have copied them for you below.
Of course, the contents of commercially produced foods are always changing, and information regarding the use of soy-free machinery can really only be obtained by contacting the company manufacturing the product.
Thus I would suggest before using the dressings noted below, you either contact the company or have your patient do so to check and see if the information is still valid, and if the machinery used is also soy-free.
Finally, there are a number of homemade salad dressing recipes that are available online using ingredients which are soy-free.
Thank you again for your inquiry and we hope this response is helpful to you.
Soy-free Salad Dressings
1)"Got a question the other day on soy-free salad dressings. Our number one salad dressing here in the Soy-free Kitchen is Good Seasons, made with extra-virgin olive oil and red-wine vinegar. I called the Good Seasons company to make sure there was no soy in the ingredients."
SOURCE: THE SOY FREE KITCHEN: Saturday, January 30, 2010
2)"For salad dressing almost everything has soy oil in it. I have found a delicious brand with out soy. Briannas (Zesty French Dressing & their blue cheese)" SOURCE: "TOPIX, soy free foods
Phil Lieberman, M.D.
Key Words: soy-free foods, soy-free salad dressing