NY Times · Jun 21, 2017
PGA Tour to Add Blood Testing to Its Antidoping Measures
The PGA Tour is beefing up its antidoping policy by adding blood testing and bringing its list of banned substances in line with the World Anti-Doping Agency.
The revised policy takes effect at the start of next season, in October.
Blood testing will allow the Tour to detect any use of human growth hormone, which is on the list of banned substances but cannot be detected through urine. But the Tour still plans to use urine samples for the majority of its drug testing next season.