i fully trust PCG, my buddies who do large scale outdoor hoop houses swear by their field test kits. i quarenteen for a month as i do all incoming cuts. havnt had any issues yet, been buying clones every season since 2018 (knock on wood).
there was a very heated thread on another forum that claimed they got hlvd from pcg cuts purchased @ the emerald cup but the consensus was that the the poster was more just trying to throw shade at them, it was completely unconfirmed / probably made up.
im a bit biased though, pcg has treated me really well over these last few years