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Is that even possible to have a serological test that can't give false positives? Field contamination etc would seem to be something that can't be prevented.
by greedo 7y ago
Is that even possible to have a serological test that can't give false positives? Field contamination etc would seem to be something that can't be prevented.
- Kiro 7y agoNo idea but that's what they say: https://www.svt.se/nyheter/inrikes/11-procent-av-stockholmarna-har-antikroppar-mot-covid-19 https://www.svt.se/nyheter/inrikes/11-procent-av-stockholmar... Google Translate: > Karolinska University Hospital and Karolinska Institutet have collaborated to produce a new antibody test in the fight against covid-19. > - We are happy to have a test that we know is okay. It is not 100 percent sensitive, it has sensitivity of 70-80 percent. Some will test negative even though they have had it. But no one will test false positively. Those we have tested that should be negative have been, says Jan Albert. (Google Translate translates chief physician to consultant for some reason but other than that the translation seems fine)
- greedo 7y agoI would be surprised if the antibody test had a 100% specificity. The sensitivity also seems to be problematic as well.
- timr 7y agoThe specificity of a test is a property of the test itself, not of the circumstances in which it is applied. If a test has a 100% specificity, and you give it a sample that has been contaminated with the virus, the fact that it registers a positive result is not an error.
- Kiro 7y agoPeople who downvote this, please explain. Is it incorrect?