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Proof·September 23, 2026

What Does "Never Remediated" Mean?

Remediation is what happens after a batch fails contaminant testing. Sanitization is a treatment before the test. Since June 2025 Massachusetts COAs can show both, so you can check the claim yourself. Here is where to look.

A sealed Advanced Cultivators die-cut bag standing on black marble beside the words Proof Not Promises, above a thin gold greca rule.

What Does "Never Remediated" Mean?

In Massachusetts, "remediated" is a regulatory word, not a marketing one. It means a batch failed a required contaminant test and was treated so it could be tested again. "Never remediated" means the flower you are buying did not take that path.

You do not have to take a brand's word for it. Since June 16, 2025, producers have had to disclose sanitization and remediation to the testing lab, and the lab can print that disclosure on the cover of the Certificate of Analysis (COA). This page covers what the rules say, the difference between remediation and sanitization, and where to look on the COA.

What remediation means under Massachusetts rules

Under 935 CMR 500.160(13), a batch that fails a contaminant test has three paths:

Reanalysis. A sample from the same batch goes back to the lab that failed it. If it passes, a second, different lab has to confirm the result.
Remediation. The batch is treated for the contaminant and a new sample goes in for a full-panel test. A failing batch can be remediated at most twice.
Disposal. The batch is destroyed.

A batch that fails again after its second remediation cannot be sold, transferred or dispensed. It has to be disposed of.

Sanitization is the other treatment

The Commission separates two things. Remediation comes after a failed test. A sanitization treatment comes before compliance testing and is, in the Commission's words, "intended to minimize microbiological contaminants." Its guidance names irradiation and ozone treatment as examples of treatments that have to be disclosed.

That is why "never remediated" is only half the answer. A batch that was irradiated before its first test and then passed was never remediated, and the phrase is true of it. If you want flower that was not treated at all, you need both answers: no remediation and no sanitization.

Where to look on a COA

Under the Commission's Administrative Order No. 5, disclosing a treatment is the producer's responsibility, and the lab reports what the producer disclosed. The Commission's FAQ puts it plainly: "The ITL can only report the representation of the sample made by the originating Licensee." The lab can enter it on the COA cover page, where the sample is described.

Lab templates differ. On a Massachusetts flower COA you will usually see one of these:

Two boxes labelled Sanitization and Remediation next to the sample ID, checked or left blank.
Two lines reading Sanitized and Remediated, each answered Yes or No.
No field at all. Some lab templates do not print it, and then the COA alone cannot answer the question. Ask the store or the brand.

Then read the contaminant results: heavy metals, mycotoxins, pesticides and microbials. A Pass tells you the tested sample cleared the state's limits. The sanitization and remediation lines tell you whether anything was done to the batch to get there.

Sources: 935 CMR 500.160(13); Cannabis Control Commission, FAQ on Administrative Order No. 5 (June 13, 2025).
On the COA	What it tells you	What it does not
Sanitization and Remediation fields	Whether the producer disclosed a pre-test treatment or a post-fail remediation for this batch	Anything about a batch that is not on this COA
Contaminant rows	Pass or Fail for heavy metals, mycotoxins, pesticides and microbials on the tested sample	Flavour, strength or effects
Cannabinoid and terpene figures	The lab's numbers for that sample	How it will feel
Harvest and test dates	How old the batch is	How it was stored since

What AC's published COAs show

Advanced Cultivators grows indoors in Lowell under cultivation licence MC283314 and publishes the full COA PDF for each cultivar on its COA index. As of September 23, 2026 the index links 12 of them.

Eight of the 12 carry the disclosure, and all eight read the same way: nothing sanitized, nothing remediated. Three from Assured Testing Laboratories leave both boxes blank. Five from G7 Laboratories print "Sanitized: No" and "Remediated: No." The other four come from a lab whose template does not print the field, so for those batches the COA alone does not answer the question.

One worked example. The D2P COA (sample 2603AST0084-0930, harvested February 26, 2026, reported March 19, 2026) leaves the Sanitization and Remediation boxes blank and passes heavy metals, mycotoxins, pesticides and microbials. D2P took 1st Place Overall Hybrid at NECANN Boston 2026.

We don't promise quality. We publish it.

That is the claim at the size the record supports: the published COAs, not a promise about every batch ever grown. Ask for the COA that matches the jar in your hand. The batch beats the brand story every time.

Passing first is the plan

Remediation is a response to a fail. What keeps a batch from failing is ordinary cultivation discipline, and AC publishes its version:

Indoor rooms at a licensed facility in Lowell (MC283314).
Every harvest hand trimmed.
A cure measured in weeks: 20 to 24 days on current batches.
Full-panel third-party testing before flower ships, with the COA published instead of held behind a request form.

Check a jar yourself

Ask for the COA that matches the batch or package tag on the jar.
Find Sanitization and Remediation on the cover page. Blank boxes or "No" mean no treatment was disclosed. A check or "Yes" means one was.
Read the contaminant rows: heavy metals, mycotoxins, pesticides, microbials. Look for Pass, not just a THC figure.
Read the harvest and test dates. They are handling facts, not effect promises.
If a store cannot produce the COA for the batch in front of you, treat that as the answer.

Quick answers

Is irradiated cannabis remediated?

It depends on when. Irradiation after a failed test is remediation. Irradiation before the first compliance test is what the Commission calls sanitization. Either way it has to be disclosed to the lab.

Does never remediated mean untreated?

Not on its own. A batch can be sanitized before testing and still never be remediated. Check both lines on the COA.

Is remediated cannabis unsafe?

A remediated batch that passes its full-panel retest met the same state contaminant limits as any other passing batch. Remediation is a disclosure question, not a pass or fail one. The COA tells you which one you are holding.

Where do I find the COA?

Ask the store for the COA that matches the batch on the jar, or look for it on the brand's site. AC's are on its COA index.

Sources

935 CMR 500.160(13): reanalysis with a Second Confirmatory Test at a different lab, remediation (at most two attempts), or disposal after a contaminant fail.
Cannabis Control Commission, FAQ on Administrative Order No. 5 (June 13, 2025; effective June 16, 2025): sanitization treatment defined, disclosure is the licensee's responsibility, the lab reports what the licensee disclosed and can enter it on the COA cover page, irradiation and ozone named as examples.
Cannabis Control Commission, "Cannabis Control Commission Issues New Order On Testing Methods" (June 17, 2025).
Advanced Cultivators COA index (advancedcultivatorsllc.com/coa-index): the 12 linked COA PDFs, read September 23, 2026.

What this page is not

This is education about a process word, not medical advice. A Pass on a COA is a lab result, not a health claim.

ADULTS 21+ · EDUCATION ONLY, NOT MEDICAL ADVICE. Effects and risks vary by person, product, dose, and method. Do not drive after use. Ask a qualified clinician about health concerns or drug interactions.

Last checked against the cited Commission rules and AC's published COAs on September 23, 2026.