This was interesting:
“Why can’t we do hair samples, because then you can actually trace further back?” asked Casey, who is also an amateur cyclist. “There are certain drugs that are flushed out of the system within a day or two days, hair actually holds that drug in the follicle longer.”
Golf’s return to the Olympics last year will ensure the game remains vigilant when it comes to testing and officials haven’t ruled out new tests as the science and doping evolves. But for now, the circuit is content with the new testing methods.
“There is a lot of alternative testing methods, including hair, but the efficiency of these tests is really not at a level that would warrant use in a sport anti-doping program at this time,” Levinson said. “Urine is the most effective method of detecting most of the substances we are looking for.”