The 2016 Olympic Games in Rio de Janeiro begin this week. And the Brazilian Doping Control Laboratory is ready to catch the athletes who might have looked for a boost via performance-enhancing drugs. The lab—which just two weeks ago was nearly suspended by the World Anti-Doping Agency for reasons WADA has yet to reveal—is fitted out with analytical machines that can detect doping substances at the lowest concentrations in the history of the games.  The IEEE Spectrum Magazine takes a closer look.