A new method to perform glucose testing quickly and practically, which does not involve blood and a needle, was developed by researchers from Colgate-Palmolive Research and Development Center. It is an electrochemical biosensor that collects saliva samples.
Saliva has been explored as an alternative way to track important biomarkers. However, most methods require laboratory equipment. To make analytics convenient for home testing, a simple but accurate detection platform is needed.
The researchers used a Aptamer-based electrochemical biosensor (E-AB), which produces a measurable electrochemical change when a specially designed piece of DNA or RNA binds to the desired target.
The sensors were immersed in saliva, without the need for additional preparation steps or reagents. In experiments, researchers found that the devices returned results within 30 seconds, remained stable in undiluted saliva for up to three days, and maintained sensitivity for up to a week if washed after each use.
This simplicity makes the test easy enough to perform at home without the help of a professional.
The researchers said this technology is the first of its kind to detect glucose in human saliva, and they hope it can help monitor health at home in a less invasive and easier-to-do way, especially for people with chronic illnesses, e.g. diabetes.
The research results were published in scientific magazine ACS Sensors.
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*Published by Marina Toledo.
Source: CNN Brasil
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