TB tests use phlegm — not the easiest thing to get or work with. It takes time for results. And there can be false negatives and positives. A new test is more accurate and takes less than half an hour.
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Long a dream, it's now real: a fast and accurate TB test that doesn't need phlegm
TB tests use phlegm — not the easiest thing to get or work with. It takes time for results. And there can be false negatives and positives. A new test is more accurate and takes less than half an hour.
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Source: NPR News
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DW Russian 
