Interesting that you should ask. I was a mitigation/mold contractor in a previous chapter. The short answer (don’t do it) begs the question what are you trying to find out? If you or a family member has a sensitivity to mold you probably know now of its presence. So there’s a lot of different ways to answer if testing is needed.
Usually people don’t need to know the genus and species of microbial growth they just need to know if it’s microbial. And answering the question is it good mold or bad mold is a fools errand imho.
That said, if your spouse is adamant about what she wants then by all means. If however you just have something small that needs to be cleaned (complete removal) then testing may not be needed for that (unless you plan to test before and again after for a “mold clearance”).
OTOH if your basement is crawling with fuzz and you know the bad news already we’d be having a different conversation.
Have I lost you yet? Feel free to DM a pic of whatever you’re thinking of testing. Or you can send it to Boadee at proton.me