A startup called T2 Biosystems is developing a test that uses magnetic nanoparticles to detect blood-borne infections in hours—compared to the days it now takes using conventional lab methods. The company's first device—about the size of a printer—will target Candida, a fungus that is the third-most-common cause of hospital-acquired infections. The detection system can identify Candida in human blood samples in about two hours. Clinical trials involving samples from actual patients are in the works.The sooner a hospital lab can identify the cause of a patient's infection, the faster that patient can be put on the right antibiotics. Today, microbiologists often try to grow the infectious agent in the lab and run various tests to identify it. This can take a few days, and some organisms, including Candida, grow more slowly than others. Tests based on amplifying genetic material are considerably faster, but require complicated processing equipment. Tests that use fluorescent labels to light up a target are also faster, but samples like blood are too cloudy for the light to pass through.
To read the full, original article click on this link: New Test Spots Infections in Hours, Rather than Days - Technology Review
Author: Katherine Bourzac
