# Episode 169: Uncovering THC Potency Variability with Cannabis ChemLab

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Podcast: [Cannabis Cultivation and Science Podcast](https://stenobird.com/podcast/cannabis-cultivation-and-science-podcast-224812)
Published: 2026-07-29T18:21:54+00:00
Episode link: https://www.kisorganics.com/pages/podcast
Audio file: https://afp-901980-injected.calisto.simplecastaudio.com/eb565bbc-b99d-4ea2-a59e-7c4a2ca16b15/episodes/4f6a6dfb-35cc-463d-94f0-00e7dbdc9c05/audio/128/default.mp3?aid=rss_feed&awCollectionId=eb565bbc-b99d-4ea2-a59e-7c4a2ca16b15&awEpisodeId=4f6a6dfb-35cc-463d-94f0-00e7dbdc9c05&feed=WsEnHj2A
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Duration seconds: 3549

## Resource

In this episode, I sit down with Jared Nieuwenhuis, Founder and CEO of Cannabis ChemLab, an ISO/IEC 17025-accredited laboratory serving medical cannabis programs and national USDA hemp growers. Drawing on over 11 years of experience in laboratory development, environmental testing, and commercial farming, Jared brings an authoritative, science-first perspective to the complex world of analytical testing. Jared pulls back the curtain on why cannabis potency test results fluctuate so wildly across the industry. He breaks down groundbreaking internal research from Cannabis ChemLab that tested over 30 different accredited reference standards, demonstrating how slight variations in calibration curves can cause the exact same flower sample to test anywhere from 14% to 25% THC. In addition to potency variability, the conversation tackles heavy metal contamination, exposing why popular ocean-based soil amendments like fishbone meal frequently cause high arsenic fails, how cannabis hyperaccumulates toxins, and how growers can use plant biology to mitigate heavy metal risks in living soil systems.

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## Transcript

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