Something Bogus on Covid Testing

This topic has 3 replies, 4 voices, and was last updated 4 years, 1 month ago by Utesbyfive.

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- 11/13/2020 at 2:49 PM #131822
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  PAC12Teams
  Participant
  
  Something extremely bogus is going on. Was tested for covid four times today. Two tests came back negative, two came back positive. Same machine, same test, same nurse. Rapid antigen test from BD.
  
  — Elon Musk (@elonmusk) November 13, 2020
- 11/13/2020 at 2:59 PM #131824
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  SkinyUte
  Participant
  
  The test has a very low false positive rate, somewhere between 2 to 0%. The false *negative* rate varies.
  
  So if he took 4 tests, and two are positive, then he almost *CERTAINLY* has it (especially since he admits to having flu-like symptoms) — and that high false negative rate is why he was tested multiple times.
- 11/13/2020 at 3:14 PM #131827
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  PlainsUte
  Participant
  
  Operative word here is “Rapid”. A PCR test is more accurate and reliable, but it is not rapid.
- 11/14/2020 at 12:09 AM #131871
  
  Utesbyfive
  Participant
  
  The antigen test isn’t as reliable as the PCR test. In fact, a lot less reliable.
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