Why wasn't DNA used by WA State to determine the identity of victims before Bundy was executed???

Ted Bundy was executed in 1989. DNA testing was in its infancy back then but it existed. It had been used, per what I can find on the internet of its history, in 1986 in England. It appeared in the USA by 1987 and was used for the first time in 1987 to gain a conviction. The person convicted was Tommy Lee Andrews and the case was in Florida. Here is a link to an article by the New York Times.
http://www.nytimes.com/1988/02/06/us/...

That was 1-2 years prior to the execution of Ted Bundy - and the case was in Florida during the time Bundy was on trial. They had to have been aware of the advent of DNA testing. So why didn't authorities take steps to preserve his blood and other evidence knowing full well that questions remained about how long he'd been killing and WA State knew that unidentified girls had been found [remains] at both the Issaquah and Taylor Mountain sites who did NOT match the girls who were known to be missing. It seems to me that instead of accepting on face value the narrative that has been out there all these years, the public needs to start questioning this case very specifically. Why would you cremate a known serial killer without preserving evidence and DNA? Why would you close cases and then turn it into a media circus? There were victims left behind and other serial killers have left living victims. I was one of Bundy's living victims. There's a lot about this case that needs scrutiny.