New Zealand’s MPI requires honey to test positive for four specific chemical markers plus a DNA marker from Manuka pollen before it can be exported and labeled Manuka. That’s a separate legal test from UMFHA’s UMF potency grading, passing one doesn’t require or guarantee the other.
The MPI Science Definition: Five Attributes That Must Be Present
New Zealand’s Ministry for Primary Industries finalized this definition in December 2017, after a three-year scientific programme testing over 800 honey samples, and began enforcing it for export from February 2018. It requires five attributes together: four chemical markers from the nectar itself (2′-methoxyacetophenone, 2-methoxybenzoic acid, 3-phenyllactic acid, and 4-hydroxyphenyllactic acid) plus a DNA marker confirmed from Manuka pollen.
All five have to be present at specified levels for honey to qualify as monofloral Manuka. Meeting some but not all can still qualify honey as multifloral Manuka, a related but separate classification, covered in more depth elsewhere in this cluster. The exact required level for each marker is precise and has been revised before, one marker’s threshold was raised from 1mg/kg to 5mg/kg in an update specifically to close a blending loophole, so treat any specific number you see cited elsewhere as something to confirm against MPI’s current published definition rather than a fixed fact.
This matters for one specific reason worth stating plainly: this test applies to honey being exported and labeled Manuka, not honey sold within New Zealand. A jar sold domestically in New Zealand isn’t required to meet this definition at all.
Is ‘Manuka’ a Legally Protected Term?
No, and this surprises a lot of people. “Manuka” isn’t a protected geographical indication the way Champagne or Parmesan are. New Zealand producers tried to secure exactly that kind of exclusive certification trademark over the term starting in 2015, and lost. New Zealand’s own Intellectual Property Office ruled in 2023 that “Manuka” is descriptive rather than distinctive, and New Zealand producers subsequently withdrew a related UK appeal as well.
What this means practically: Australian producers, whose honey also comes from Leptospermum scoparium growing wild in parts of Australia, can legally use the word “Manuka” too. What New Zealand does have is the MPI testing requirement covered above, a scientific bar honey must clear to be exported from New Zealand specifically under that name, which is a testing standard, not a trademark on the word itself.
How This Differs From UMF Grading (a Common Point of Confusion)
Here’s the distinction this whole page exists to make clearly: MPI’s legal test and UMFHA’s UMF grading check for completely different markers.
MPI’s export definition looks for four specific chemical compounds (2′-MAP, 2-MBA, 3-PLA, 4-HPLA) plus Manuka pollen DNA. UMF looks for methylglyoxal, leptosperin, and DHA, with HMF checked as a freshness marker. These are two separate marker sets, not the same test under different names.
That means a jar can legally be exported and labeled “Manuka” by passing MPI’s test without ever carrying a UMF grade at all, and a UMF grade doesn’t substitute for MPI compliance either. Comvita’s jars pass both, MPI’s export test to leave New Zealand labeled Manuka, and UMFHA’s grading (license #1019) to carry a UMF number. Wedderspoon’s KFactor system is a third, separate commercial layer on top of the same underlying MPI requirement, its own pollen-count metric, not a replacement for either the legal test or UMF grading. See the full comparison of UMF, MGO, KFactor, and NPA for how those commercial systems relate to each other.
When I cross-check a jar’s UMFHA license, per the site’s standard verification process, I’m confirming its UMF grade is real. That’s a different check entirely from whether the honey met MPI’s export definition in the first place, and neither one does the other’s job.
US Import & Labeling Rules
Honey imported into the US, including Manuka, must carry the country of origin in English, typically as “Product of New Zealand,” even alongside other certification marks on the same label. The word “Honey” itself must appear as the common name, net quantity must show both US and metric units, and the label needs the name and address of the producer, packer, or distributor.
A jar can legally be labeled by its floral source, “Manuka Honey,” under FDA’s honey-specific labeling guidance, provided Manuka genuinely is the chief floral source, the same underlying claim MPI’s export test is designed to verify at the New Zealand end. Calling honey “Manuka” when it isn’t predominantly sourced that way is a mislabeling issue under FDA rules, separate from whether it also passed MPI’s test for export. Pure honey with nothing else added doesn’t need an ingredient list at all.
Health claims are a different, more restrictive area entirely, honey doesn’t have FDA authorization for specific health claims, and what a brand can legally say about benefits is its own regulatory question, not a labeling or origin issue covered here.
FAQ
Does the MPI definition apply to honey sold within New Zealand?
No. MPI has stated plainly that Manuka honey sold domestically in New Zealand isn’t required to meet the export science definition. The requirement applies specifically to honey being exported and labeled Manuka.
Can a jar be legally called Manuka without a UMF grade?
Yes. MPI’s export definition and UMFHA’s UMF grading are separate systems. A jar can pass MPI’s test and legally carry the Manuka name without ever being graded under UMF, MGO, or any other potency system.
Does the MPI definition prevent all fraud?
No. It sets a real scientific bar for what can legally leave New Zealand labeled Manuka, but it doesn’t control what happens to labeling after that honey reaches another country, or stop honey that was never genuine Manuka from being mislabeled somewhere else in the supply chain. That’s exactly why checking a specific jar’s certification still matters even with this legal definition in place.