Previously it was known that nasal swab is more sensitive but in a recent paper published in NEJM showed that, At 1 to 5 days after diagnosis, 81% (95% CI, 71-96) of the saliva samples were positive, as compared with 71% (95% CI, 67-94) of the nasopharyngeal swab specimens, at days 6 to 10 after diagnosis, 76% of the saliva samples were positive, as compared with 65% of the nasopharyngeal swab specimens. The results flip at the day 11 mark, with 41% of the saliva samples showing positive results, as compared with 50% of the nasopharyngeal swab specimens. What do you think?
Saliva as good as nasal swab fir covid 19 testing
See the link below
https://www.medscape.com/viewarticle/936877
Yes Anmar Aldewachi , Recent study showed that result. I read that article, that why i wanted to know other scientists view on it. It was said previously that Nasopharyngeal swab is more sensitive than others but science is evolving day by day. Now we came to know that Saliva is as good as nasal swab for Covid-19 testing, and sometime better than that. Thank you to participate in the discussion and providing the link of that article. Thanks again.
Dear Hermann Gruenwald , thank you for your active participation in the discussion. Science evolving day by day, its never dismayed human expectation. So, we can hope for the best.
Cher Israt Hassan, je pense que les deux types de test sont fiables. Simplement que les gens ont plus adopté le test nasal.
Nokam Taguemné Epouse Abena Marie Elvire Dear ! probably you wrote in French. I don't speak that language. Can you answer in English ?
Dear Israt Hassan, I think both types of tests are reliable. Just that the nasal swab test was more adopted at the start of the pandemic.
hi, In many places it has been chosen to perform the test by swabbing the nasal cavity and oropharynx, it would be a matter of making a multicenter comparison, like the one you present, to know if the saliva samples do not really have a greater number of false positives. Based on the fact that the type of section does not contain the same elements and / or particles, that is, both in shape and shape are different. But what you suggest is very interesting, perhaps we should go deeper into the subject. Greetings
The nasal swab test was more adopted at the start of pandemic but both nasal and oropharyngeal swab are reliable, saliva sample is also suggested .
Hi
Both the nasal swab and saliva sampling is reliable
And a new researches show the saliva testing present potential advantages like collection does not require trainned staff or personal protective equipment, can be done outside testing centers, and may be better tolerated in challenging or pediatric populations and it also frees up the time of medical personnel and spares them potential exposure to the virus.
Article Saliva or Nasopharyngeal Swab Specimens for Detection of SARS-CoV-2
Both nasal and saliva tests are reliable but i think now a days the oropharyngeal swab and saliva give reliable result.
Researchers found that the agreement between the saliva and swab administered through the mouth was 93%, and that sensitivity was 96.7%. The swab administered through the nose and saliva had a result agreement of 97.7%, with sensitivity of 94.1%. The oral rinse was only 63% effective at detecting the virus
Alaa Qasim Thanks for your informative response. you are absolutely right that saliva testing present potential advantages like collection does not require trained staff or personal protective equipment, can be done outside testing centers, and may be better tolerated in challenging or pediatric populations and it also frees up the time of medical personnel and spares them potential exposure to the virus. That's why it is more preferable. But i think both are reliable sampling procedure.
Researchers found that the agreement between the saliva and swab administered through the mouth was 93%, and that sensitivity was 96.7%. The swab administered through the nose and saliva had a result agreement of 97.7%, with sensitivity of 94.1%. The oral rinse was only 63% effective at detecting the virus.