This from Zoe , DrTim Spectator
When should I get a COVID test?
If you feel newly unwell, especially if you’re suffering from any of the common COVID symptoms, you should stay home and get a COVID test, even if you’ve been vaccinated. This is particularly important if you notice any changes to your sense of taste or smell.
A positive result from a lateral flow test is highly likely to be true. However, a negative result from a lateral flow test is not reliable enough to be sure you’re definitely not infected, so if your symptoms persist it’s best to get a PCR test to be sure.
If you’re a ZOE COVID Study contributor and report any of the 20+ symptoms consistent with COVID-19, you’ll be offered a test through the app.
At the moment, you can only get an NHS PCR test if you have any of the ‘classic three’ symptoms of cough, fever and loss of smell (anosmia).
We’re calling on the UK Government to expand this list now that the most common symptoms have changed, particularly for those who are vaccinated.