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The device has the potential to make blood draws more efficient, while helping health systems deal with a shortage of phlebotomists.

The practice of drawing blood has changed very little over the decades. It looks about the same now as it did 50 years ago.

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Unlike with a traditional blood draw, the patient does not see the needle go into the arm nor the tubes of blood. The process takes about two minutes and has a 95% success rate on the first attempt.

With one blood draw, Rai said, the breakthrough technology can identify more than 200 types and subtypes of solid tumors. "All tumors are known to shed in order to spread," said Rai.