Well, My Goodness...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3669629/
(How do you determine that you’re getting the ‘real’ stuff?)
The wound care line from australia/new zealand was the one i knew about.
To carry the UMF trademark Manuka honey must be certified by an independent testing laboratory, packed into pots in New Zealand by a licensed member of the New Zealand Unique Manuka Factor Honey Association, and labelled in NZ. Therefore the most assured way of buying genuine Manuka UMF honey is to buy it on-line from a New Zealand based website.