Dr. Kendall Crowns

My answer to that is maybe there is still DNA out there waiting to get done, and we just don't know about it yet.

There can be a rush on it, but typically it can take six to eight weeks depending on what drugs are on board, especially if there's some sort of synthetic or designer drug being looked for.

It can take up to two months.

Like synthetic marijuana, bath salts, those kind of designer drugs that every so often show up that we don't have a lot of specific testing for, so more has to be done.

Every day, the drug chemists are making new variations on drugs that the toxicology labs are constantly having to test for to try and keep ahead of.

Often with strangulations, the evidence is trying to get the object off your neck.

So you'll see scratch marks on the neck from the individual's fingernails themselves.

You can also see injuries on the person who is the suspect in the case as well, scratches on their face, scratches on their arms.

If you see intense petechial hemorrhages or small pinpoint hemorrhages on the face, you know that the compression may have been released and then brought back, and it could be that sign of a struggle as well.

As well as the bruising on her neck could be from her thrashing about trying to get the restraint off her neck.

So there's a number of signs that could show that she fought back to try and get out of the hold.

So again, that would be the particular hemorrhages that you're talking about, the little pinpoint hemorrhages you see in the eye, but you also see them in the periocular region or around the eyes as well, can be throughout the face, the gums.

And what happens is it only takes a little bit of pressure to compress your jugular, which is 4.4 pounds, and your carotid, which is 11 pounds of pressure.

And once those are compressed, you do still have a little bit of vertebral artery circulation coming in.

But what happens when those are released, all of a sudden that blood comes rushing back into your head.

And then if the compression comes back again, that blood is trapped a second time.

And then that can cause the petechial hemorrhages to become more expressed or more pronounced because you keep getting that blood flow restored and then compressed and then restored and then eventually completely choked off or constricted.

And that's why you'll see more and more bursting of the hemorrhages because of the blood keeps coming back in and then getting stopped.

No, no, there would be no way.

It's just if they're really pronounced.