How expensive is testing now? It looks like the standard method is HPLC analysis of capsaicinoids. I found old forum posts from about 10 years ago indicating $50-$65 per test from providers including SBL, which doesn't sound bad, but I don't know if prices have gone up recently.
Part of the issue is that there's a massive variety between peppers, and genetic diversity is incredibly wide, making it nearly impossible to determine the exact type of pepper you have. There are a few different universities and governments that "certify" peppers, but they aren't connected in any way.
That makes a lot of sense. I was thinking about testing a particular pepper you have for chemical content, but genetic testing and mapping results to pepper type names does sound more complicated/expensive.