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The history of cystic fibrosis diagnosis
In 1955, Dr. Harry Shwachman, head of Boston Children’s Cystic Fibrosis Clinic, developed the first practical sweat test to diagnose cystic fibrosis (CF). It involved encasing the patient’s body in a plastic bag to collect sweat, then using the pictured device to measure levels of salt in the sample. Cystic fibrosis causes sweat to be 2-5 times saltier than average. The sweat test allowed for much simpler and earlier diagnosis of CF, crucial to effective treatment. A version of it is still the main diagnostic tool used today.
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