The best<unk>  samples contain very little saliva, as saliva contaminates the sample with oral bacteria. This is especially true for samples for laboratory testing in cytology or microbiology. Specimen adequacy is assessed by the laboratory technologists by examining a Gram stain or cytology stain of the<unk> . More than 25 squamous epithelial cells at low power magnification exam under the microscope strongly suggests salivary contamination.<unk>  samples have been used to quantify the degree of airway inflammation in human diseases such as asthma. Specifically, this work has demonstrated that a sub group of severe asthma patients have airway inflammation that is resistant to treatment with corticosteroids. When a<unk>  specimen is plated out in microbiology, it is best to get the portion of the sample that most looks like yellow pus onto the swab. If there is any blood in the<unk> , this should also be on the swab. Microbiological<unk>  samples are used to look for infections, such as Moraxella catarrhalis, Mycobacterium tuberculosis, Streptococcus pneumoniae, and Haemophilus influenzae. Other pathogens can also be found. Purulent<unk>  contains pus, composed of white blood cells, cellular debris, dead tissue, serous fluid, and viscous liquid (mucus). Purulent<unk>  is typically yellow or green. It is seen in cases of pneumonia, bronchiectasis, lung abscess, or an advanced stage of bronchitis.
Sputum
Exudate
Transudate
Bottled gas
Tear gas
Breathing gas
Blood
Biological specimen