@eileene7 - in the end, I tested negative for both. I was having various gastrointestinal issues, such as nausea, random vomiting and abdominal cramping, and this was one necessary set of tests to get to the bottom of my issues.

My friend's son came out positive on at least one of these tests for fructose and/or sucrose. His treatment has been avoidance. Sounds like it involves a lot of label reading and researching online before the family eats outside the house.