How One Reporter Pierced The Hype Behind Theranos

When the blood-testing company Theranos opened to the public in 2013, founder Elizabeth Holmes made bold claims of having revolutionized the diagnostic-lab business. With just a few drops of blood pricked from a finger (as opposed to several vials drawn from a syringe in the arm), the company said it could not only run the full range of laboratory tests, but also turn around results within hours, all at a low cost.