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Amido Black is not specific for blood. It also detects some other bodily fluids.yep. common sense tells us how footprints work, and this doesn't make sense imo I have a few theories, but I was hoping others would have thought about it, too. All I've gotten so far are rote explanations multiple times, but pretty sure the guy couldn't fly, and pretty sure they'd have used better if they had it, so... if you think of anything, pls let me know.
The PCA does mention a presumptive test for blood (not which test or result) and then mentions Amido Black, which the PCA states is a protein stain that detects the presence of "cellular material." page 5
So, it might not have been a print from blood.
JMO