The Dec. 11 US hemp rule counts total THC, including THCA, and caps THC at 0.4...

https://kameronsinsightfuljournal.publishlane.com/posts/how-do-i-explain-total-thc-to-a-buyer-without-sounding-clueless

The Dec. 11 US hemp rule counts total THC, including THCA, and caps THC at 0.4 mg per container. That narrows the market for intoxicating hemp products and may shift demand toward compliant inputs