It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
originally posted by: IAMTAT
a reply to: ScepticScot
TY...ANOTHER admission that any Ct over 28 is useless for actual diagnosis...AS WELL AS for additional sequencing.
“For cases with a known RT-PCR cycle threshold (Ct) value, submit only specimens with Ct value ≤28 to CDC for sequencing. (Sequencing is not feasible with higher Ct values.)”
-CDC Source
originally posted by: ScepticScot
originally posted by: IAMTAT
a reply to: ScepticScot
TY...ANOTHER admission that any Ct over 28 is useless for actual diagnosis...AS WELL AS for additional sequencing.
“For cases with a known RT-PCR cycle threshold (Ct) value, submit only specimens with Ct value ≤28 to CDC for sequencing. (Sequencing is not feasible with higher Ct values.)”
-CDC Source
No its showing your claim was wrong.
originally posted by: nonspecific
I just went and looked directly on the CDC website in the end.
It would have saved time all round of you'd just linked to that.
a reply to: IAMTAT
originally posted by: nonspecific
I'm perfectly capable of using a search engine.
It's all down to weather I think it's worth even bothering that matters.
a reply to: IAMTAT
originally posted by: IAMTAT
originally posted by: ScepticScot
originally posted by: IAMTAT
a reply to: ScepticScot
TY...ANOTHER admission that any Ct over 28 is useless for actual diagnosis...AS WELL AS for additional sequencing.
“For cases with a known RT-PCR cycle threshold (Ct) value, submit only specimens with Ct value ≤28 to CDC for sequencing. (Sequencing is not feasible with higher Ct values.)”
-CDC Source
No its showing your claim was wrong.
I've publicly accepted that it refers to 'additional sequencing' and removed that post....but it also clearly shows (and states) the uselessness of any PCR scanned @ 28+.
As is evident from the statement, the CDC didn’t alter the cycle threshold value for the PCR test used to identify presence of infection. The statement is relevant to genomic sequencing, which is an additional test used on samples that already tested positive for SARS-CoV-2 by PCR. The reason why this guidance is in place is because genomic sequencing requires a relatively large amount of the virus’ genetic material in the sample. Therefore, a sample with only trace amounts of the virus’ genetic material, which would show a high Ct value, wouldn’t be suitable for sequencing.
Not sequencing a sample doesn’t change the fact that someone tested positive for COVID-19 by PCR, meaning that the person is infected, making them a COVID-19 case. Therefore, this CDC guidance has no influence on the number of COVID-19 cases recorded, as the article claimed.
[quote]
originally posted by: drewlander
a reply to: BatSars
Let us not forget that in the US the CDC will not renew PCR testing for covid under EUA, so it begs the question what test was used then? Im starting to wonder if anyone has had covid.