These blood tests have significant margins of error and should not be used to make public health recommendations, the CDC said.
Experts share what you need to know about the blood tests that show a COVID-19 infection and possible immunity.
The tests look for blood proteins called antibodies, which the body produces days or weeks after fighting an infection.
Reporter John Carreyrou details how the Theranos founder almost pulled off the fraud of a generation and why it matters.
"Raise our little girls with the stereotype that they can be the best in engineering and science and math."
While the only way to know for sure if you have kidney disease is to get tested, there are a number of physical signs. Sometimes people attribute these physical symptoms of kidney disease to other conditions. This is because those with kidney disease tend not to experience symptoms until the very late stages, when the kidneys are failing or when there are large amounts of protein in the urine.
Humans are terrible at timing when it comes to finding out how to effectively treat health problems. And we're even worse at recognizing our bodies' subtle cues that something might be wrong in the days, weeks, or even years leading up to a health crisis.