Hi Cheryl, typically I do a one food challenge per group (otherwise the process would take 6 months!)–but sometimes I do try 2 foods w/in a group. Food is a bit complex…and sometimes it might be something else in the food you are reacting too. Here are two examples that occur in my practice–failed avocado re-introduction–but passed blackberries–might be more indicative of fat maldigestion in the avocado trial rather than a FODMAP/sorbitol intolerance. Or…traditional yogurt is a fail while milk was tolerated–might indicate an intolerance to the particular probiotics in the yogurt vs. lactose. BUT…in general–if an individual passes a food re-introduction….we move on. I might try more foods if the individual has a failed challenge (as long as the ‘fail’ did not cause major GI upset)–in an effort to get more information and liberalize diet as much as possible!

Thanks for the kind feedback, Sandie!