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I’ll be honest, 14 peoples is a staggering amount at the theshold of the pandemic, vaccinated or not.
LFT may tell you if you’re infectious, PCR tell you if you have it in your system.
Edit as eskay made a point below.
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Specificity and sensitivity are key.
If the PCR is 90% sensitive, it is missing 10% of covid infections.
If you find the false positive rate for the randox test, you can work out the likelihood of a true negative infection given both tests, and by proxy, the risk of infecting other people in a family gathering.
edscoble
NotThamesWater
@eskay
@edscoble - Yes, Randox was positive, NHS negative (PCR)
@leggy_blonde - Lateral flows have always showed negative
@davidual - I agree, my wife's family are hell bent on getting everyone together though! My concern is which test do you know believe? There will be 14 people in a small house tomorrow for Christmas dinner, one is potentially positive. It is one bloody day for fuck's sake.