A wealth of evidence suggests these tests are often unnecessary, costly, and can lead to adverse effects.

How researchers, doctors and recovered patients are joining efforts to see if one of the oldest pandemic treatments really works.

Unnecessary vitamin D testing dropped dramatically in Canada after payment stopped, but Choosing Wisely guidelines also had an impact in both U.S. and Canada.

Long hospital stays and invasive medical tests help identify serious bacterial infections in infants, but a U-M expert says there may be a more efficient, less painful way to make a diagnosis. 

A longtime blood test that measures the likelihood of a cardiac event has become more sensitive and more precise. Why doctors and patients should be cautiously optimistic.

Hundreds of thousands of hospital patients get a pricey genetic test. But it’s often unnecessary, a team of U-M clinicians says.