Tulane University announced Friday that it's researchers have developed a blood test that can detect COVID-19 cases missed by nasal swab PCR tests.

Looking for a COVID test? Here's the difference between a rapid test and deep nasal swab.

Large-scale study by Hokkaido University finds simple saliva test just as reliable as gold-standard, more complicated and expensive PCR nasal swab method.

Early Yale research conducted by testing professional basketball players suggests the saliva test is about as accurate as a traditional nasal PCR test, but Mehta says “we need to more broadly ...

As more testing for COVID-19 rolls out, you may be wondering whether you should get tested. Tests for COVID-19 include the polymerase chain reaction (PCR) diagnostic test, which is a nasal swab.

The PCR test currently used to test for COVID-19 was, indeed, created for that use. It's not a vaccine in disguise.

New COVID Spit Tests May Be More Accurate and Easier Than Nasal Swabs Saliva PCR tests may detect disease earlier in the course of an infection By Anthony Warmack edited by Tanya Lewis ...

RT-PCR tests of a combined oro-/ nasopharyngeal swab sample were used as the reference standard.

Emerging research suggests saliva-based PCR tests may offer the earliest opportunity to detect omicron. However, early studies offer a more messy picture for at-home rapid antigen tests.

Prefer an adorable dog licking your face over a swab up the nose? A study suggests trained dogs can be better at detecting COVID-19 than PCR tests.

COVID-19 testing has spawned a veritable cottage industry, with medically minded entrepreneurs stepping up to meet increased demand — often charging top dollar to expedite PCR test results.