How to correctly take sputum culture specimens

You can use a commercial special plastic box or inner wax paper box that does not absorb water, and send the sputum to the inspection room within 2 hours at room temperature and 2~4 hours after refrigeration.

It seems easy to collect sputum samples, but it is not easy to obtain truly qualified sputum samples overnight. The real phlegm refers to the secretion of trachea and bronchus or the secretion in alveoli, not the saliva in the mouth or the secretion in the nasopharynx.

Natural expectoration is generally used. After getting up in the morning, the patient gargles first, coughs up one or two sputum from the deep part of the respiratory tract, and immediately sends it to a clean container for examination. Sputum specimen collection method for special examination: cytological examination, taking fresh sputum at 9- 10 am. Look for mycobacterium tuberculosis and take 24-hour sputum.

Extended data:

Sputum culture specimens are introduced as follows:

If it is difficult to take sputum, use special methods to take sputum, or scrape specimens directly from the nasopharynx. Sputum examination is mainly used for respiratory inflammation and infection, as well as the diagnosis of tumors. Sputum exfoliative cytology is the simplest method to diagnose lung cancer, especially for patients who can not tolerate fiberoptic bronchoscopy and can not operate.

It is of great significance for the diagnosis of diseases and the guidance of medication. The quality of sputum samples directly affects the accuracy of the results, and the positive detection rate is affected by many factors, such as tumor stage, classification, examination times, sputum retention quality, production quality and so on.

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