Can "Biological Passports" Save Sports From Doping?

As 80beats reported back in March, the World Anti-Doping Agency (WADA) has been experimenting with so-called biological passports to curb cheating in sports. Biological passports are electronic records for individual athletes that provide baseline measurements of substances in their blood and urine that officials can track to catch juiced athletes, since a sudden deviation from the baseline would suggest funny business. Now, the WADA has released a new set of guidelines to monitor athletes' blood profiles for evidence of performance enhancing substances.