Thread by @LinneaBaudhuin, Q: Why is there an ~20-30% false negative rate with the PCR [...]

Linnea Baudhuin, PhD 🧬

LinneaBaudhuin

Read on Twitter

Q: Why is there an ~20-30% false negative rate with the PCR

https://abs.twimg.com/emoji/v2/... draggable="false" alt="🧬" title="DNA" aria-label="Emoji: DNA"> test for #SARS_CoV2

https://abs.twimg.com/emoji/v2/... draggable="false" alt="🦠" title="Microbe" aria-label="Emoji: Microbe">?
A: Mostly due to sampling as explained by @PSampathkumarMD @MayoClinic
Thread 1/2 https://www.news18.com/news/world/many-people-who-have-tested-negative-for-covid-19-might-actually-have-it-warn-scientists-2573267.html">https://www.news18.com/news/worl...

Many People Who Tested Negative for Coronavirus Might Actually Have it, Warn Scientists

The majority of tests around the world use a technology called PCR, which detects pieces of the coronavirus in mucus samples.

https://www.news18.com/news/world/many-people-who-have-tested-negative-for-covid-19-might-actually-have-it-warn-scientists-2573267.html

1. The nasopharynx is a tricky place to get a sample from
2. The virus

https://abs.twimg.com/emoji/v2/... draggable="false" alt="🦠" title="Microbe" aria-label="Emoji: Microbe"> may have already passed from the upper to the lower respiratory system. (ie a sputum sample would be a better testing specimen
2/2

You can follow @LinneaBaudhuin.

Tip: mention @twtextapp on a Twitter thread with the keyword “unroll” to get a link to it.

Latest Threads Unrolled: