LFT- who is being unreasonable?

[beetuljoos]

Person 1 saw an article stating that LFTs are more reliable when done on the throat, even if they are for the nose. They had symptoms and did one LFT up nose as packet suggested (negative) and one on throat (positive). They immedietely booked a PCR and texted people they had seen the day before to warn them.

Person 2 lives with person 1 and so also did a LFT- just one, up the nose- negative. Person 2 was due to see various people today and tomorrow and knows the news of Person 1's positive LFT will have got back to them from person 1 texting contacts. Person 2 feels the LFT on throat was inaccurate because not done as instructions and therefore isolating/cancelling plans is a waste of time. Person 2 is annoyed at person 1 for texting people about the (they believe to be false) positive LFT result.

Who is in the wrong here?

YABU- Person 1
YANBU- Person 2

"People are being urged by experts to swab their throat whenever they take a lateral flow test for Covid-19, even if they are using a 'nose only' kit."

According to this and many other links

From my own experience I would definitely trust the throat swab more than the nose. Attached are 3 tests I took on Christmas morning. We had two kits and I chose the old throat and nose swab .. that came up with a faint line .. I then did a nose only which was negative. Then I did a third and got a strong positive which was confirmed by pcr. If I had done the flow flex test first I could potentially have infected 9 other people as I had no symptoms

You should do throat first and then nose with the one test. You can test negative on one and positive on the other depending on where the virus is located.