I have the same question. Early on someone mentioned what looks like an outline of scissors on the front of the shirt. I saw it immediately then. There is also a comment on this thread of someone that found something with weathered blood in or on it and it looked just like the clothing here. So I have no idea but IMO maybe LE does too or they would've tossed the clothing? I am like you: just test them for blood and get this over with. Let the public know.