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Re: SARS-CoV-2 testing
Posted: Wed Dec 22, 2021 9:39 am
by headshot
Classic…
Their new 7-day test and release guidance directly contravenes the guidance on the NHS website.
- C1E6228F-8502-497C-86C6-A2E4C48973F3.jpeg (81.37 KiB) Viewed 3046 times
Re: SARS-CoV-2 testing
Posted: Wed Dec 22, 2021 9:46 am
by shpalman
That says to not do a PCR test.* The Guardian says you can get the all-clear from a lateral flow test.
From Wednesday, new guidance will enable the 10-day self-isolation period for vaccinated and unvaccinated people in England who have tested positive for coronavirus to be reduced by three days if they get the all-clear from lateral flow tests.
* - possibly because the PCR test is sensitive and can also pick up fragments of virus which your immune system has killed and your body is getting rid of.
Re: SARS-CoV-2 testing
Posted: Wed Dec 22, 2021 9:52 am
by Gfamily
For a long time they've said not to use a PCR within 90 days of an infection, though you can use LFD tests. PCR tests are more sensitive and can pick up traces of previous infections for longer.
I thought a negative LFT result was supposed to be indicative of being clear of a current infection.
Ninja'd
Re: SARS-CoV-2 testing
Posted: Wed Dec 22, 2021 10:24 am
by headshot
Ah fair enough.
Re: SARS-CoV-2 testing
Posted: Fri Dec 31, 2021 4:11 pm
by shpalman
Did we never link to
Rethinking Covid-19 Test Sensitivity — A Strategy for Containment? It's over a year old now but it's the source of the graph in
this tweet even if it doesn't explicitly calibrate its time axis.
Re: SARS-CoV-2 testing
Posted: Fri Dec 31, 2021 4:20 pm
by Bird on a Fire
It's a bit quicker with Omi though, Shirley?
Re: SARS-CoV-2 testing
Posted: Fri Dec 31, 2021 4:44 pm
by shpalman
Bird on a Fire wrote: ↑Fri Dec 31, 2021 4:20 pm
It's a bit quicker with Omi though, Shirley?
Basically the idea of having a PCR from the previous 48-72 hours is a bit useless compared to doing a rapid test right when you need to know.
Re: SARS-CoV-2 testing
Posted: Fri Dec 31, 2021 5:06 pm
by jimbob
Re: SARS-CoV-2 testing
Posted: Mon Jan 03, 2022 6:37 pm
by shpalman
Re: SARS-CoV-2 testing
Posted: Mon Jan 03, 2022 10:12 pm
by raven
To be fair, if the community pharmacies they're supplying are anything like our local chemist they'll all have been closed for those 4 days too, so there wouldn't have been anywhere open to deliver kits to.
(You could probably make a case for them shutting for a shorter time, but that would require acknowledging we're in some sort of emergency situation. Not sticking your head in the sand & pretending everything is just going to magically turn out fine.....)