If, on the other hand, nothing's been tested, then.....by all means, speculate away. You, me, the investigator, your uncle tony, whoever. Such as "yeah we got blood samples, but they may not mean anything. They may not be Maura. They could be somebody's old menstrual blood from the cloths hamper for all we know."
Wow. Sorry, my tpiyng apparently sucks today!
ETA: I can't get the quotes to come up as quotes, so the part I've quoted I edtied to put in italics. Hope that makes it clear, since for whatever reason the nesting quote function isn't working.