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A member asked:
What does it mean when i spit and cough up black?
A doctor has provided 1 answer
Carbon: If you are coughing up black in your sputum, that usaully is carbon from smoke. If you are a smoker try to quit asap. Do you have any occupational exposures? Sometimes old blood will have a black appearance. If it continues see your health care provider.
Answered 9/20/2012
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