The laboratory is one of fewer than a dozen private labs nationwide that process crime evidence, according to Kupferschmid, who sits on the board of directors of the American Society of Crime Laboratory Directors. Most evidence is sent to state, county or city crime labs, which are publicly funded.

"In the early days of DNA we used to need a blood stain the size of a quarter. Now we need a blood stain just the size of a head of a pin. Anything you touch, our testing is sensitive enough that we'll develop a DNA profile."

And what about the perfect crime? Kupferschmid said such a notion is becoming a thing of the past with today's technology.

"If I drove a car and touched the steering wheel, I'm going to leave my DNA behind," Kupferschmid said. "If I chew gum and spit the gum out in a parking lot, there's going to be my DNA on that gum. If I smoke a cigarette, it's the same thing. It's extremely difficult to cover all your bases. There's always evidence."

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