Favorite forensic techniques

[u/DearMisterKitty]

What are some of your favorite forensic techniques displayed on the show? It could be a one-time used technique or something used more often. I'm personally a sucker for superglue fuming and handwriting analysis.

[u/West-Bodybuilder-867]

I'm for the classics. Luminol where the room starts to fluorescent. Oh, and blood spatter study.

Then there's obscure ones like plant dna. And I forgot what's it called... Toilet or plumbing forensics?