It says a pre-departure PCR test in the UK costs on average ВЈ128 per person compared to just under ВЈ62 in eight key Europe destinations. PCR tests are more expensive due to the analysis that is needed to return a result.Д«ut ABTA, the Travel Association and the Airport Operators Association have also found that UK PCR tests cost double the amount of tests available in other European countries. Samples for PCRs have to be sent to a lab so often take between 24 hours to three days to return a result. Rather than detecting viral genetic material, LFTs detect proteins specific to coronavirus in the sample to detect if people have the virus.ДЄs LFTs do not require laboratory analysis, they return results faster - usually within 30 minutes - and work similarly to pregnancy tests. Substances, enzymes known as 'reverse transcriptase' and 'DNA polymerase', are added to the swab to make copies of any viral RNA that is present.Д¬opies of the RNA are picked up by 'primers' which show the genetic material has been found.ДЄlthough they are also swab tests, Lateral Flow Tests are antigen tests and therefore quite different. The PCR is a diagnostic test that detects the virusвЂ™s RNA (genetic material) in a sample taken from a nose and throat swab. Polymerase chain reaction (PCR) tests are often seen as the 'gold standard' test for identifying clinical cases of infection because it requires laboratory analysis. What is the difference between how the tests work? PCR tests require lab analysis meaning they take longer to process.

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