Should BodilyFluidBlacklightReveal include blood? Or is that its own trope since Blacklights don't do that without Luminol?

I was looking at the entry for Freaks (2018), and it struck me that the trope of detecting cleaned-up blood through UV lights had to be a trope (despite blood not being able to be detected by blacklight without a solution like Luminol), so I searched and found Bodily Fluid Blacklight Reveal, which is primarily focused on other bodily fluids, but mentions blood at least twice. I've found two other entries on the site that mention using a blacklight to display blood splatters without the use of Luminol. Does it make more sense to remove blood from consideration for Bodily Fluid Blacklight Reveal (and note as much in the entry) and maybe pitch a trope for the tendency for works to act like it does work that way?

I don't have an issue with keeping blood on the page and that its inclusion in the trope without luminol is Artistic License – Chemistry.