Unfortunately you can't use the sugar-in-honey tests on this page if the honey is already integrated in processed foods. At least with most processed foods - I might just try these on one of those yogurts where you have separate honey (?) to pour into it. Then again, if it's not "real" honey, they have an obligation to mention that in the ingredients list, so looking at that should be enough...

But yeah, I was also thinking "if people really have to do these tests themselves, something is going seriously wrong".