For this edition, I reviewed over 80 kratom vendors to determine which ones publicly publish lab results for the products they sell. Any vendor with transparent, up-to-date lab testing was ranked higher than those without.

To qualify, lab results had to be easily viewable on the vendor’s website — not available only by email or request. I also excluded vendors whose test results were older than one year. I have linked directly to the vendors website under the “Kratom Vendor” column and then I have linked to the lab test itself under the “Lab Test” column.

Out of the 80+ vendors evaluated, only 15 publish current, batch-specific lab results. From there, I found the highest testing mitragynine product from each qualifying vendor and applied the following formula to rank each vendor: (Mitragynine % × Quantity) ÷ Price = Mitragynine Per Dollar.

I have double checked all the top lab testing vendors but not so with the non-lab testing vendors but it is likely I have made many mistakes and so if you see anything please point it out and I will do my best to edit in any corrections that need to be made.

The Best Kratom Review Table On Reddit

(Cell phones might need to scroll right to view the entire chart)

Note on bias: Price was measured per kilogram. For vendors that don’t offer kilo options, I scaled up the price of their smaller packages for comparison. This may make smaller-batch or boutique vendors appear more expensive than bulk vendors.

If there was ever a tie on pricing, I attempted to favor vendors that include shipping and extra costs into their advertised pricing rather than vendors that reveal extra costs only in the final step before the purchase.

The data was collected over the month of June 2025 and will likely be outdated fairly quickly.

My table is ranked by mitragynine levels specifically. It’s important to note that mitragynine alone does not capture the full picture of the effects of kratom. We still have a limited understanding of the many alkaloids found kratom and how they interact and while mitragynine does seem to be the most important part of the puzzle, it is my no means the total picture. At this stage in the industry, I believe transparency is the most important factor. Assuming all shared lab tests have been provided in good faith, I fully support any vendor at the top of this list for their commitment to transparency and product quality.

For this list I’ve made no judgments regarding the credibility of any lab tests or the vendors. I’ll leave discussions around trustworthiness and reliability to the comment section of this post.

An Invitation To Join In A Mission To Better Define Kratom Strains

For years, my work in the kratom industry has focused on one central question: how do we truly define strains? Despite extensive research, I’ve yet to find a clear or consistent answer. It’s become increasingly evident that to dig deeper into this mystery, I’ll need to take matters into my own hands.

In just two weeks, I plan to launch my own kratom website with a mission to bring clarity to the strain debate through blind taste testing and structured survey data.

To kick things off, I’ll be offering three heavily discounted, unlabeled bags of red, white, and green kratom. Along with each purchase, you’ll be invited to participate in a survey that aims to quantify and compare the effects of each type. I will be making the results of the survey public in order to best facilitate a community driven research project by which I hope that together, we can define kratom strain better than anyone has ever done before.

Follow along or get involved at TheKratomPark.com — I’d love to have you be part of it.