Inside each package is one person's test kit with blood to be analyzed. That's just half a day's worth of tests, Lin said. Along with Signatera, Natera also has tests for organ transplant ...

which are tiny packages that cancer cells release into the blood. In a study of nearly 1,000 people, the test (which is still unnamed) detected between 88% and 93% of early- and late-stage ...

Blood tests can help a doctor diagnose a variety of health conditions, including infections, anemia, high cholesterol, vitamin deficiencies, organ failure, HIV, cancer, and diabetes. Doctors use ...