Mucus vs. Phlegm vs. Sputum: Whats the Difference? (2026) Sputum refers to the material that is actually coughed up and expelled from the lower airways It may contain phlegm along with saliva, cellular debris, and microorganisms
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 - Wikipedia Sputum is mucus that is coughed up from the lower airways (the trachea and bronchi) It is commonly referred to as "phlegm" 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
Coughing Up Phlegm: Causes and Treatment - Cleveland Clinic What is coughing up phlegm? Coughing up phlegm is a symptom of infections like the flu and common cold Phlegm is a specific type of mucus that originates in your lungs and throat It’s slightly thicker than the mucus that’s produced in your nose and sinuses Another name for phlegm is sputum
Phlegm Color Chart: What the Color of Your Phlegm Means Producing clear phlegm often means your body is reacting to irritants or inflammation, while yellow or green phlegm may suggest an infection Red, pink, brown, or black phlegm sometimes signify serious issues, such as bleeding, chronic lung conditions, or inhalation of certain substances
Understanding Mucus in Your Lungs - American Lung Association Mucus in the lungs is known as phlegm or sputum It is a common symptom in chronic lung diseases such as COPD (including chronic bronchitis and emphysema), cystic fibrosis, bronchiectasis, NTM lung disease or asthma
Sputum: a guide for people with lung conditions This guide aims to answer questions about sputum including when and how to take a sputum test and what to do with the results This topic can create anxiety, especially if you have been recently diagnosed