What Happens When Cannabis Fails Microbial Testing in New York?
A step-by-step walkthrough of New York's OCM failed-lot remediation process: notification, treatment, same-lab retesting, the one-remediation rule, and where X-ray treatment fits.
A failed microbial COA is a bad day — but in New York it is not automatically a destroyed batch. The state's adult-use rules include a defined remediation pathway, and understanding it before you need it makes the difference between a controlled recovery and a scramble.
Here's the process as laid out in the Office of Cannabis Management's processor compliance guidance and lab testing Q&A, in plain language.
Step 1: The failure is documented — and reported
When a compliance sample fails microbial testing, the laboratory issues a failed certificate of analysis (COA). Failed results don't stay quiet: labs report results into the state's systems, and OCM guidance requires licensees to notify OCM before remediating — by email to compliance@ocm.ny.gov with the subject line "Failed Lot Remediation – [your license number]", attaching the original failed COA.
Step 2: Decide — remediate, repurpose, or destroy
Under OCM's rules (9 NYCRR § 123.6(h)), a failed lot generally has three possible paths:
- Remediate — treat the lot to address the contamination, then retest.
- Repurpose — for some failure types, divert the lot to extraction, with the new product fully retested under a new lot number.
- Destroy — if neither option is available or the lot fails again.
Two important limits:
- Pesticide failures can't be remediated. The remediation pathway does not apply to lots that failed for prohibited pesticides.
- Mycotoxins are their own analyte. Remediation technologies inactivate living organisms; they don't remove aflatoxins or ochratoxin A that mold has already produced. A lot heavily contaminated for a long time can pass its microbial retest and still fail mycotoxins. This is a real limitation of every remediation method, and any provider who won't say so plainly is selling too hard.
Step 3: The remediation itself
The batch production record must document how the lot was remediated — including the specific equipment and processing lines involved. This is where the choice of method matters commercially, not just microbiologically:
- The failed lot is already fully grown, trimmed, and often packaged. Anything that costs moisture, terpenes, or bag appeal now costs you twice.
- You get one shot. A lot may be remediated only once. If the retest fails, the entire lot must be destroyed. A method that only treats product surfaces — leaving contamination alive inside dense flower — burns that one chance.
This is the core argument for penetrating treatment such as X-ray: photons pass through the full volume of the flower (and through most packaging), breaking microbial DNA everywhere in the product rather than only where light or gas can reach. See how X-ray decontamination works for the mechanism.
Step 4: Retest — same lab, full panel, independent sampling
After remediation:
- The lot goes back to the same laboratory that issued the failed COA — you cannot shop the retest to a different lab.
- Per OCM's testing Q&A, a licensed sampling firm collects the sample from the remediated lot, and the lab retests all microbial analytes, not just the one that failed.
- If it passes, the lab issues an amended COA noting the remediation, linked to the product's QR code, and the product can move to market.
Worth knowing: retesting without remediation is not an option in New York unless you can document a testing or sampling error and get prior written OCM approval.
Step 5: If it fails again
There is no second remediation. A lot that fails after remediation must be destroyed, with the destruction recorded in inventory tracking.
What this means for your operation
- Move fast, but not carelessly. The remediation pathway rewards operators who already know their remediation partner, packaging requirements, and logistics before a failure happens.
- Choose treatment that can't half-work. With one attempt allowed, partial treatment is the most expensive possible outcome.
- Protect the product while treating it. The lot has to be sellable after it passes — treatment that damages moisture, terpenes, or appearance recovers the COA but loses the customer.
- Ask about mycotoxins early. If the lot has visible mold damage or has been contaminated for a while, discuss mycotoxin risk with your lab before spending money on remediation.
How RAD-C fits in
RAD-C provides the treatment step: X-ray remediation using a Rad Source 420XL, in a sealed, no-touch process — your product is packed and sealed by your team, treated inside its sealed containment, and returned unopened. The regulatory workflow (notification, documentation, retest scheduling) stays with your compliance team; our job is making the one remediation you're allowed count.
Working against a failed COA right now? Call 315-217-1102 — we'll talk through product, packaging, quantity, and scheduling the same day.
Sources: NY OCM Adult-Use Processor Compliance Welcome Packet (Section J, citing 9 NYCRR § 123.6(h)) · NY OCM Sampling & Lab Testing Q&A · NY OCM Laboratory Testing Limits
About this guide: published by RAD-C for general information. Regulatory details are summarized from the sources linked above, reflect our understanding as of the update date shown, and can change — always verify current requirements with the NY Office of Cannabis Management and your compliance counsel. Nothing here is legal advice.