"We're focussed on giving clarity on this so the industry can hold their head up high and demonstrate to overseas markets and our consumers in New Zealand that what they're consuming is true to label.
"People can have a reference point with these interim guidelines so they know what the benchmark is that [the makers] have to meet."
MPI would continue to work with the industry to ensure all businesses knew what the guidelines required of them, Mr Gallacher said.
"Ultimately though, if businesses do not comply we will consider enforcement action."
Developing a guide was challenging as there was a lack of validated scientific data to characterise manuka honey, he said.
"MPI is funding further research, with the initial results looking promising.
"When this research is validated it will be incorporated into a revised guide, which we aim to consider in late July 2015."
The fact current testing did not allow for the differentiation of manuka from kanuka properties was particularly an issue, he said. However, part of MPI's research would look into using new technologies, including pollen identification, DNA profiling and chemical fingerprinting, which could detect the difference.