testing has gotten a lot better and you should be wary of labs because sometimes they just tell you what you want to hear so they can take your money.wow...
not to be a poo-poo-head... i remember some years ago, i think in washington state they sent samples to 6 diff labs, and each came back with diff thc strengths.. from 21-29... now that was some years ago.... maybe testing has gotten better...
just like any other service do your due diligence and check around for reputation.
when i was in eugene, or several years ago we caught a guy just pretending to be a lab.
he would take in samples until he had a big batch and then submit them all to a real lab where he got a deep discount because of volume.
then he would charge as much as he could get away with.
he had to leave town to avoid multiple ass whippings that everyone wanted him to experience.
but these days the law has stepped in and requires lab certification and standards.