Manuka honey manufacturers label their product with a unique Manuka factor (UMF) rating. This number describes the levels of MGO and a precursor, dihydroxyacetone. The range for UMF scoring is as follows:
0 to 4: an undetectable amount is present
5 to 9: low levels are present
10 to 15: useful levels are present
16: superior, high-grade levels are present
The higher the UMF number, the higher the level of these compounds. To get the most benefit, use a Manuka honey with a high UMF. Shop for Manuka honey at https://manukahoneyusa.com/shop.