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Wait for the specified amount of time - usually 15 to 30 minutes - before reading your result. The booster campaign is at the forefront of the Governments plan to tackle Omicron, which is threatening to plunge the UK into another lockdown. Those who test positive must immediately self-isolate to avoid passing the virus on to others. However, you should be careful to check the instructions for your lateral flow tests before taking them, as sometimes they can show false positives if you read them too late. Signing up to the newsletter is simple. COVID-19: How do lateral flow tests work and how will England's twice To inquire about a licence to reproduce material, visit our Syndication site. He said a positive line should appear within 30 minutes of undertaking the test and a second line which appears after the 30-minute window may not indicate a positive result. An LFT should only be taken by those who don't have any Covid symptoms, reports WalesOnline. What does a faint line on lateral flow test mean? - BelfastTelegraph.co.uk So to make things easier, we've clarified some of those issues below that may cause some confusion. "However, if a line appears *after* the interpretation window then this does NOT count as a positive test. Here are the main principles of testing and isolation: After following the instructions on the leaflet included with testing packs, there's often a clear result. Symptoms of the Covid variant responsible for 93.7% of cases in England, Nine Omicron symptoms affecting fully vaccinated and two early signs you might have it, Rishi Sunak to meet King Charles as Truss defends her record - live, Johnson was begging people for votes in a demeaning way, says IDS, Welcome, PM Sunak the last best option to take over from Truss. They are less accurate than PCR tests, which is . Updated to add video 'Introduction to Rapid Lateral Flow testing'. What does a faint line mean on a lateral flow test? - Express.co.uk Lateral flow tests are practical, easy to interpret and can be used in a wide range of settings. This article was amended on 22 April 2022 to remove a reference to litmus paper. In the UK, LFDs are being used primarily to prevent spread of SARS-CoV-2 by finding cases among people who do not have symptoms of covid-19. They also give a result very quickly, typically within 30 minutes. Trials were carried out on the tests in a wide range of environments. After carrying out tests, the UK Health Security Agency said. Lateral flow tests (LFTs) became a slightly uncomfortable but necessary part of our lives since the onset of the Covid-19 pandemic. Something went wrong, please try again later. He said each testing kit will have an interpretation window, which is normally 30 minutes but you can check the leaflet that comes with your kit to make sure. one next to C and one next to T, even faint lines, shows the test is positive. We use some essential cookies to make this website work. A student inserts a lateral flow test swab into his mouth at .