Today we both took PCR tests. The nurse said his PCR will probably be positive for up to 90 days. Is he still contagious with a negative antigen test and a positive PCR test?

Here, we describe a method of systematic PCR screening with multiround sample pooling for the isolation of rare PCR-positive samples. As an example, we have applied this protocol to the recovery ...

The standard test for infection with the coronavirus looks for a genetic fingerprint. Laboratory errors, including contamination, can lead to false results, a problem seen with environmental testing.

The PCR test will likely show positive results for much longer than a rapid test. But the rapid test shows you when you're infectious.

How long after Covid will you rest positive on a PCR? A PCR tests identifies the presence of coronavirus genetic material in a sample but doesn’t show if someone is currently infectious. A person who ...

1 A faint positive lateral flow test result is shown in the image above Credit: Sun Online You no longer have to get a follow-up PCR test if you test positive on a lateral flow with no symptoms.

A Teesside mum has spoken of her shock following the results of her covid PCR test coming back as positive, despite testing negative on lateral flow tests and continuing to do so. The woman, who ...

People who test positive for COVID-19 on rapid lateral flow tests will not need to confirm their results with a follow-up PCR test if they are not showing symptoms, the UK Health Security Agency ...

Barely half of the positive results from antigen tests carried out on close contacts of Covid-19 cases have been confirmed by further PCR testing. An average of almost 4,000 antigen tests have ...

As SARS-C0V-2 variants emerged, researchers developed a PCR test that uses molecular beacons not only to diagnose COVID-19 infection, but also to identify the specific variant causing that infection.

People can test positive for COVID-19 up to 12 weeks after their initial diagnosis. It’s unlikely they’re contagious in the weeks after they’ve recovered.

People can test positive for COVID-19 up to 12 weeks after their initial diagnosis. It’s unlikely they’re contagious in the weeks after they’ve recovered.