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[[File:Sputum.JPG|300px|thumb|left|''"Such large, lovely sputum you have..."'']]
'''Sputum''' is a mixture of mucous and saliva coughed up from the [http://gomerblog.com/2016/02/pulmonary-team-hypoxic/ respiratory tract], which is easy to collect in patients who don't need TB ruled out but is impossible to collect in [[2016 Revised Contact Precautions|patients who ''do'' need TB ruled out]].
[[Category:Medical Tests & Procedures]]
