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  • Sputum: Definition, colors, causes, and when to see a doctor
    Sputum is a type of thick mucus produced by the lungs This article explains the types of sputum, what causes changes, and when to speak with a doctor
  • Mucus: Phlegm, Causes, Colors How To Get Rid Of It
    It lines your mucous membranes and helps trap and destroy or clear out germs and harmful particles Mucus gets thick and sticky and might be white, yellow or green when you have an infection It’s also called phlegm, snot or sputum Mucus is usually thin and clear
  • Sputum: Definition, Colors, Causes, and Conditions (2025)
    Sputum is a mixture of saliva and mucus coughed up from the respiratory tract, typically as a result of infection or chronic conditions like bronchitis, pneumonia, or tuberculosis It can be clear, yellow, green, or tinged with blood, and its analysis helps diagnose various respiratory diseases
  • Phlegm Color Chart: What the Color of Your Phlegm Means
    For example, yellow or green phlegm can be a sign of a respiratory infection, while red or pink phlegm can indicate lung bleeding or inflammation Phlegm is typically clear and thin Your body produces it as part of its natural defense against irritants and infections
  • Sputum - Wikipedia
    Sputum is mucus that is coughed up from the lower airways (the trachea and bronchi) In medicine, sputum samples are usually used for a naked-eye examination, microbiological investigation of respiratory infections, and cytological investigations of respiratory system
  • Understanding Sputum and What the Different Colors Mean
    Sputum is a mix of cells, foreign matter, and white blood cells produced in the respiratory tract An increased amount of sputum is often due to increased respiratory inflammation and is the body's attempt to protect and heal damage to the airways
  • Sputum Analysis - StatPearls - NCBI Bookshelf
    Specifically, sputum is a mixture of saliva and mucus that is coughed up from the respiratory tract, often following an infection or irritation of the mucosa Phlegm is derived from the Greek word φλγμα ("humor caused by heat")





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