Since the late '90s, doctors have included race in equations used to estimate kidney function. The once widely-used test often overestimated how well Black people's kidneys were functioning — making them appear healthier than they actually were and resulting in delayed diagnoses of organ failure and proper evaluation for transplants. Dr. Neil Powe, chief of medicine at the Priscilla Chan and Mark Zuckerberg San Francisco General Hospital, joins "Created Equal" to discuss the test's bias and changes being made to make the test more equitable.