ah, I see what you're saying (about the collection issue) but what about the experts saying "no dna" found on clasp -
isn't there a difference between no dna vs. contaminated dna.
this issue I don't understand.
DNA degrades over time unless you somehow are able to put it in stasis (like a vacuum). The clasps rusted, and the exposure that caused the rust would have also wiped out any DNA on it.
I noticed that the DNA results on the bra clasp had peaks for Meredith at 1000 and peaks for Raffaelle at around 100. A big point about the bra clasp was that "copious" amounts of DNA was found. I'm not so sure how we know this is true. If Meredith's peaks were at a 1000, that's a strong signal. A peak at a bit over 100 is not extremely strong, but it's not below 50 which is where most people stop paying attention.