description Helen Murray Free Overview
Helen Murray Free was an American chemist whose work transformed routine clinical testing, particularly tests used to detect and monitor diabetes. Working with her husband, Alfred Free, at Miles Laboratories, she helped develop dry reagent strips that changed color when exposed to substances in urine. Their products included Clinistix, introduced in the 1950s for glucose testing, and later multiple-test strips that made chemical screening faster and more accessible.
help Helen Murray Free FAQ
What is Helen Murray Free known for?
Helen Murray Free helped transform routine clinical testing through dry reagent strips that change color when exposed to a sample. Her work was especially important for tests used to detect and monitor diabetes.
How do the reagent strips associated with Helen Free work?
A chemical reagent on the strip reacts with the sample and produces a visible color change. The result can then be compared with a reference scale or read by a testing device.
Who was Alfred Free in Helen Murray Free's work?
Alfred Free was Helen Murray Free's husband and laboratory collaborator at Miles Laboratories. Together they helped develop dry reagent-strip testing, including products associated with glucose testing.
Were Helen Free's test strips used only for diabetes?
Diabetes-related glucose testing was a major use, but the dry-reagent strip approach also supported routine testing for other substances. Her work at Miles Laboratories helped make clinical testing faster and easier to perform.
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