MICHAELDUTCH Posted June 18, 2021 Share Posted June 18, 2021 I not know where to put this question about Rt-PCR Testing entering Thailand WHICH TEST is needed for Thailand flying with Qatar Air PCR TEST swab In a PCR polymerase chain reaction test, a swab of mucus is taken from the nose and throat with a cotton swab. Saliva including international travel certificate in English OR It is also possible with us to take the PCR test using saliva. Then NO swabs are used. ? Sorry if wrong Topic Link to comment Share on other sites More sharing options...
richard_smith237 Posted June 18, 2021 Share Posted June 18, 2021 The Covid-19 RT PCR test is designed to take swabs from the back of the throat and from the back of the nasal cavity. If a health care professional administers the test they will do so as directed. However, if you have a home test kid to self administer you can do what you want with it, which is a weakness in the self test system. But, in not administering the test correctly i.e. putting saliva into a cup and then putting the saliva on the swab there is a risk of an inconclusive result. Its best to carry out the test as accurately as possible to avoid having to re-take the test. Link to comment Share on other sites More sharing options...
CALSinCM Posted June 18, 2021 Share Posted June 18, 2021 30 minutes ago, richard_smith237 said: But, in not administering the test correctly i.e. putting saliva into a cup and then putting the saliva on the swab there is a risk of an inconclusive result. Same with the PCR test. Considering there are no globally accepted standards for PCR cycle counts, there is a (significant) risk of an inconclusive (false-positive) result. The CDC recommends a cycle count of 28 for vaccinated people. But that's the problem. For vaccinated people. So they themselves openly promote using non-standard cycle counts: one CT for vaccinated, and another for unvaccinated. That's manipulating the outcomes. Purposefully. It's unethical. And the fact is that labs world-wide to set the cycle count to anything. Which is unreliable. The cycle-count should be set to 28 as a global standard for everyone. But without a standard cycle-count? There is too much risk to travel to Thailand imho. Link to comment Share on other sites More sharing options...
partington Posted June 18, 2021 Share Posted June 18, 2021 1 hour ago, CALSinCM said: Same with the PCR test. Considering there are no globally accepted standards for PCR cycle counts, there is a (significant) risk of an inconclusive (false-positive) result. The CDC recommends a cycle count of 28 for vaccinated people. But that's the problem. For vaccinated people. So they themselves openly promote using non-standard cycle counts: one CT for vaccinated, and another for unvaccinated. That's manipulating the outcomes. Purposefully. It's unethical. And the fact is that labs world-wide to set the cycle count to anything. Which is unreliable. The cycle-count should be set to 28 as a global standard for everyone. But without a standard cycle-count? There is too much risk to travel to Thailand imho. I would like a reference or citation for these claims that you make, as they seem a bit nonsensical at first glance. Firstly the quantitative PCR method used to detect a positive or negative result is not based on a fixed number of cycles being defined. Without going into too much detail: all samples are run for ~45 cycles, with a positive control standard (known RNA representing viral sequences) and a negative control (water). After the run curves are drawn and a horizontal threshold line is drawn across joining where all the curves start to become exponential [see fig. below]. A positive result is when any sample crosses this threshold before 40 cycles. reference from cdc https://www.fda.gov/media/134922/download This being the case I find it hard to see how the cdc could recommend a fixed number of cycles for any samples, from vaccinated people or not If you can point to a reference or citation, [for example you might be referring to a completely different RT-PCR test that I'm unaware of] I will quite happily admit that I am mistaken. Link to comment Share on other sites More sharing options...
theoldgit Posted June 20, 2021 Share Posted June 20, 2021 I'll move this to the Covid-19 thread, where I think it's more appropriate. Link to comment Share on other sites More sharing options...
Jeffr2 Posted June 20, 2021 Share Posted June 20, 2021 JAL accepts nasal or saliva. But the PCR test is the gold standard. Best check with your airline to make sure! Link to comment Share on other sites More sharing options...
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