No single blood test can diagnose liver cancer, but liver cancer blood tests can detect signs of liver dysfunction. Depending on a person’s signs and symptoms, a doctor may recommend further testing, ...

Routine newborn screening (NBS) has transformed early disease detection. However, traditional biochemical tests limit the range of conditions that can be identified at birth. Next-generation ...

A polymerase chain reaction (PCR) test detects genetic material from a pathogen or abnormal cell sample. Ways of collecting samples include a nasal swab, a saliva swab, or taking a sample of blood.

PCR tests, also called molecular tests or nucleic acid tests, are considered the gold standard in detecting the presence of SARS-CoV-2, the virus that gives rise to COVID-19. However, they can take a ...