# ND (non-detect) > ND (non-detect) on a COA means the compound was not found at or above the method's limit of detection; it does not mean the amount is zero. - Canonical: https://genetixbay.com/knowledge/glossary/non-detect.html - Also written: ND, non-detect, not detected, nondetect, N.D., below detection - Glossary category: Lab testing · Evidence: Established - Status: Draft: awaiting expert review · Updated: 2026-10-31 - Licence: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/), attribute "GenetixBay cannabis glossary" ND, "not detected", means that the lab's method saw no signal for that compound at or above its [limit of detection](https://genetixbay.com/knowledge/glossary/lod.md). It is a statement about the method's sensitivity as much as about the sample. A lab with an LOD of 0.1 µg/g and another with 0.005 µg/g can both report ND honestly on samples that contain very different trace levels. ## In practice When a [COA](https://genetixbay.com/knowledge/glossary/coa.md) shows ND for a pesticide, look for the LOD or [LOQ](https://genetixbay.com/knowledge/glossary/loq.md) printed beside it and the action limit that applies. "ND (LOD 0.01 µg/g)" is informative; a bare "ND" on a page with no limits or methods is not. In potency results, ND for a minor [cannabinoid](https://genetixbay.com/knowledge/glossary/cannabinoid.md) such as [THCV](https://genetixbay.com/knowledge/glossary/thcv.md) usually just means it's below the panel's limit. It doesn't prove the plant can't make any. ## Don't confuse with - **