What's the Deal With COVID Testing Now? Doctors Explain When to Test, How to Get Them and More

A PCR test detects the actual genetic material of the virus and involves a step that amplifies the presence of any material ...
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Here's how to take a rapid COVID-19 test accurately at home

SAN FRANCISCO -- The recent outbreak of the omicron variant has many people running for the store for an over-the-counter rapid test. But simply taking the test once isn't enough to tell you if you ...

Dear Doctor: My prostate specific antigen test score was higher than it used to be. Should I be concerned?

ANSWER: The prostate specific antigen (PSA) test is a way to screen for prostate cancer. It is not perfect, but when used properly, it can save lives by identifying men who have early prostate cancer ...