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Sputum is a thick fluid produced in the lungs and in the adjacent airways. Normally, fresh morning sample is preferred for the bacteriological examination of sputum. [2] A sample of sputum is collected in a sterile, wide-mouthed, dry, leak-proof and break-resistant plastic-container and sent to the laboratory for testing. [2]
The best sputum samples contain very little saliva, [2] 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 sputum.
For example, different types of samples must be collected in appropriate tubes to maintain the integrity of the sample and stored at appropriate temperatures (usually 4 °C) to preserve the virus and prevent bacterial or fungal growth. Sometimes multiple sites may also be sampled. [citation needed] Types of samples include the following:
A sample of saliva can also be collected from the mouth. Excision (cutting out), a surgical method for the removal of solid or soft tissue samples. Puncture (also called centesis ) followed by aspiration is the main method used for sampling of many types of tissues and body fluids.
The collection trap is then appropriately labeled and sent off for testing. [3] Recent literature for the use of endoscopic BAL in therapy uses essentially the same process. A flexible bronchoscope is most commonly used. The physician seeks out areas with excess mucus or other abnormalities, then uses saline and suction to clean it. [19] [14]
Why mucus production steps up when you're sick. When you get sick, have allergies or even just have irritants such as dust in your nose and throat, the respiratory tract "kicks into high gear to ...
Variety of microbiological samples. A laboratory specimen is sometimes a biological specimen of a medical patient's tissue, fluids, or other samples used for laboratory analysis to assist in differential diagnosis or staging of a disease process. These specimens are often the most reliable method of diagnosis, depending on the ailment.
The color of your mucus can reveal some surprising things about your health. Here's what your mucus color means, according to experts.