Stay updated with breaking news from Helen murray free. Get real-time updates on events, politics, business, and more. Visit us for reliable news and exclusive interviews.
Great science minds we lost in 2021 stuff.co.nz - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from stuff.co.nz Daily Mail and Mail on Sunday newspapers.
Last modified on Fri 4 Jun 2021 06.58 EDT In the 1950s the US chemist Helen Murray Free, who has died aged 98, was responsible for developing glucose dipsticks. Their use led to much simpler medical screening methods that are still widely used today for pregnancy tests, the diagnosis and monitoring of diabetes, and to detect and monitor a range of kidney, liver and metabolic disorders and other medical conditions. Before then, without central testing laboratories, if a patient needed to be tested for diabetes the analysis work was done in the doctor’s office: mixing urine with chemicals such as copper sulphate, heating it over a Bunsen burner and looking for a red-orange precipitate indicating sugar. It was time-consuming, restricting the number of tests a doctor carried out, and inconclusive, as it did not differentiate between glucose (indicating diabetes) and other sugars. ....
Subscription Notification We have noticed that there is an issue with your subscription billing details. Please update your billing details here Please update your billing information The subscription details associated with this account need to be updated. Please update your billing details here to continue enjoying your subscription. Your subscription will end shortly Please update your billing details here to continue enjoying your access to the most informative and considered journalism in the UK. ....