TB, or not TB? At last, a urine test can diagnose it quickly


A URINE test for tuberculosis could make it much easier to identify the disease before it kills. TB is currently diagnosed using a skin test, or by culturing bacteria from a person’s sputum. Both methods take days to give results. Now Alessandra Luchini of George Mason University in Virginia and her team have developed a urine test for TB that gives results in 12 hours. It detects a certain sugar that coats the surface of TB bacteria. The test uses tiny molecular cages embedded with a dye that can catch and trap these sugar molecules,
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