What does "ISO/IEC 17025 accredited" mean?

ISO/IEC 17025 is the international standard for testing and calibration laboratory competence. Accreditation means an independent body has audited the laboratory's methods, equipment, personnel, and quality systems and confirmed they meet rigorous technical requirements. It is the gold standard for analytical testing worldwide — the same standard used by forensic, pharmaceutical, and food-safety labs.

Why is my Total THC so high if Δ9-THC is below 0.3%?

Total THC is a calculated figure that accounts for both Δ9-THC and THCa, the non-intoxicating acidic precursor present in raw flower. The formula is: Total THC = Δ9-THC + (0.877 × THCa). Hemp flower naturally contains high levels of THCa, which converts to Δ9-THC only when heated (smoked, vaped, or cooked). Federal compliance under the 2018 Farm Bill is determined by the Δ9-THC concentration alone, which remains below 0.3% in every batch we release.

What does ND mean on a COA?

ND stands for "Not Detected." It means the laboratory's instruments did not detect that compound at or above the method's limit of detection (LOD). It does not necessarily mean zero — it means the concentration, if present at all, is below the threshold the instrument can reliably measure. For regulated contaminants, ND is the best possible result.

The lot number on my label isn't listed here.

This page displays our current active releases. Older batches are archived but their COAs are always available on request. Email us at portcitygreens@gmail.com with your lot number and we will send the corresponding COA within one business day. If you believe there is an error on your label, please include a photo and we will investigate immediately.

How do I know this COA wasn't faked?

Every COA we publish includes the laboratory's name, accreditation number, analyst signature, and a unique sample ID. You can independently verify the lab's accreditation status through the ANAB (ANSI National Accreditation Board) or A2LA public directories. You can also contact the laboratory directly using the contact information printed on the COA and ask them to confirm the sample ID and results. We encourage this — transparency is the entire point.

Can this product cause a positive drug test?

Yes, it is possible. Standard workplace drug tests (urine immunoassay panels) screen for THC metabolites and cannot distinguish between hemp-derived and cannabis-derived THC. Even though our products are federally compliant, regular use of hemp flower may result in a positive drug test. If you are subject to drug testing, consult your employer or a medical professional before use. We cannot guarantee a negative result on any drug screening.