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A breath test analyzes the breath. Usually the breath is analyzed for the presence of alcohol. I think there are breath testers that analyze for other drugs such as cannabis.

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βˆ™ 14y ago
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βˆ™ 11y ago

Many conditions can be detected by a breath test. Scientists have developed breath tests that may be able to detect infections, Breast cancer, heart failure and lung cancer.

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Q: What can a breathalizer detect?
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