Tag
tuberculosis testing
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How Long Does the TB Skin Test Last? The Full Timeline & What You Need to Know
The stakes are higher than most realize. A false negative—caused by reading the test too soon—could allow undetected tuberculosis to spread, while a false...
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How Long Is a TB Skin Test Good For? The Science Behind Validity & Retesting
What happens when a test expires in your arm? The induration (hardened swelling) that signals exposure fades over time, but the clock isn’t uniform. A...