while I'm glad they're no longer doing urinalysis and convicted people of DUI based on evidence that doesn't prove anything beyond that they've used marijuana i

while I'm glad they're no longer doing urinalysis and convicted people of DUI based on evidence that doesn't prove anything beyond that they've used marijuana in the past several months, the standard they use to test for impairment (5ng/ml seems to be the highest standard I could find among states that have a standard) may not actually indicate recent marijuana use and in some states the standard for intoxication is so low that frequent users will still test positive after days of abstinence (https://pubmed.ncbi.nlm.nih.gov/32841811/ https://pubmed.ncbi.nlm.nih.gov/32841811/)