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Helen Murray Free, chemist who revolutionized diabetes testing, dies at 98 Emily Langer © J. Scott Applewhite/AP Helen Murray Free receives the National Medal of Technology and Innovation from President Barack Obama. When Helen Murray Free entered college in 1941, young women enjoyed few professional opportunities upon their graduation. For the most part, she said, they could hope to become “secretaries, nurses or teachers.” In keeping with the limitations of her time, Mrs. Free had enrolled at the College of Wooster in Ohio planning to become an English and Latin tea...

Helen Murray Free Dies at 98; Chemist Developed Diabetes Test She and her husband invented a dip-and-read paper strip that greatly simplified the diagnosis of the disease and paved the way for home test kits. Helen and Al Free at Miles Laboratories in Indiana (later acquired by Bayer). The paper-strip test they developed made it easier for clinicians to diagnose diabetes and cleared the way for home test kits.Credit...Bayer By Denise Gellene May 3, 2021, 3:08 p.m. ET Helen Murray Free, a chemist who ushered in a revolution in diagnostic testing when she co-developed the dip-and-read diabetes...