The boy suspected of biting off the nuclear test stick swallowed belly incident. Macau Association of Laboratory Medicine Supervisor Ye Bingji introduced, regardless of nasopharyngeal swabs and oropharyngeal swabs are uncomfortable, but the nasopharyngeal swabs will not have vomiting feeling, the sample sensitivity is higher, more importantly, the testers and residents cooperate with each other, sampling work will be more smoothly completed.
Global prevention and control of the new coronavirus, viral nucleic acid testing is one of the important measures, the quality of samples sampled during the testing process directly affects the test results. Ye Bingji was interviewed, there are three main methods of nucleic acid sampling, including deep throat saliva (saliva collection device), nasopharyngeal swabs and oropharyngeal swabs, sampling methods depend on the regional epidemic prevention measures.
Throat saliva (saliva collection device) testing, the subject cough saliva to the sampling bottle, as simple as it sounds, but not just "spit", must be coughing through the oropharynx to contain nasal fluid, in other words, if the test can only provide oral saliva, may make the accuracy greatly reduced. Ye Bingji suggested that the test can not eat or rinse a lot before the test, will affect the test results.
For the nasopharyngeal swab, insert the cotton swab attached to the reagent into the nasal cavity and scrape the mucous membrane epidermis several times with moderate force. For the oropharyngeal swab, the cotton swab attached to the reagent is inserted into the pharynx from the mouth and the mucosa of the bilateral pharyngeal tonsils and laryngopharyngeal wall is scraped with moderate force. He believes that the two sampling process testing rod need to stay for a period of time, sampling will have discomfort, including oropharyngeal sampling will be regurgitated, vomiting, nasopharyngeal sampling will not, and will not happen to misuse the test rod.
He pointed out that there are field studies show that the nasopharyngeal swab is more accurate than the oropharyngeal swab, the same test in the nasopharyngeal swab test positive about 90%, the oropharyngeal swab positive about 50%, that Australia is suitable for the use of nasopharyngeal swab. Establish perfect sampling operation guidelines for technicians to follow and explain to the subject, the subject should relax and cooperate with the smooth completion of the sampling work.
Ye Bingji that yesterday there are children for oropharyngeal swabs suspected of biting off the test stick, which also occurs in other places.
Testing rod has a certain degree of toughness, non-forceful situation will not break, that the sampling process discomfort caused by the child twisted the meter or inevitable, the parents should calm the child's emotions, with good sampling work.
As for whether to let the test subject to decide their own sampling method?
Ye Bingji pointed out that the sampling method of nucleic acid testing needs to be defined by the government, but that the need for unified operation, does not recommend selectivity, otherwise it will lead to confusion in the detection process. And suggested that this Australia daily testing quota is limited, if not necessary without the need to make an appointment to test to ensure that those in need of services.
