American chemist and educator
According to Wikipedia, Helen Murray Free was an American chemist and educator. She is most known for revolutionizing many in vitro self-testing systems for diabetes and other diseases while working at Miles Laboratories. The tests are still marketed today with blood tests as Ascensia Diabetes Care, and urine tests under Siemens Healthineers. The pioneering dip-and-read strips, allowed for testing to be more convenient and efficient, enabling doctors and patients to be less reliable to laboratories for results.
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