Four-time Major winner Rory McIlroy believes golf's drug testing policy has to be far more stringent if it wants to become a long-term Olympic sport.
The Northern Irishman thinks the threat of doping is low because he "does not know of a banned substance that could help a golfer across the board with driving, with putting, with concentration" but feels administrators have to do more to bring it into line with other sports.
McIlroy has decided not to compete in Rio, for a variety of reasons, but that does not mean he does not want the sport to succeed in the Olympics.
However, in order to do so he said it has to improve a doping policy, with the sport set to feature again in Tokyo in 2020.
"On average I probably get tested four to five times a year, which is very little compared to the rest of the Olympic sports," said the world No 4.
"I've gotten to know a lot of athletes over the years and whether it be coming to their houses and doing blood and urine (tests), I think drug testing in golf is still quite far behind some of the other sports. I haven't been blood-tested yet.
"I think blood testing is something that needs to happen in golf just to make sure that it is a clean sport going forward.
"I've been drug tested once this year but it was only a urine test.
"You can't really pick up HGH (human growth hormone) in a urine test (so) I could use HGH and get away with it.
"If golf wants to stay in the Olympics and wants to be seen as a mainstream sport as such, it has to get in line with the rest of the sports that test more rigorously."