People choose THC-free broad-spectrum CBD to avoid intentionally added THC...

https://scarlettsinspiringop-ed.zenbloomer.com/posts/what-does-batch-specific-mean-on-a-cbd-coa

People choose THC-free broad-spectrum CBD to avoid intentionally added THC while keeping other hemp compounds. Trace amounts can still matter for drug tests. Check a batch-specific COA, and ask the testing provider what its screen detects.