Optical Sensor Checks Blood in Real Time

Sep-17-16 Researchers at York University have developed a biosensor able to test for multiple diseases from a single blood sample.

Currently, only one type of protein can be tested for in each blood sample, requiring multiple samples if different diseases are suspected. To help speed the process, and reduce the number of blood draws, the team from York University developed an optical biosensor that combines light and electricity in a new way.

The surface of the testing device is first modified to attract a certain protein. When the sensor makes contact with the blood sample, the protein will bond to it, changing the resonance frequency of the light reaching the sensor. The device can detect this change, and in turn detect the presence of the protein, with the results displayed in real time.

Image: Current testing procedures can require multiple blood samples

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[CO.UK]
[YORK.AC.UK]

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