Golf Magazine
No professional golfer as ever been blood tested for doping, until now. And only if they are going to compete at the 2016 Olympics.
Some performance enhancing drugs are only detectable via blood testing.
The sport's ruling bodies were criticised by two-time major winner Greg Norman for not taking the threat of doping seriously enough.
Neither the PGA Tour or European Tour publishes details of the number of drug tests it carries out during a year.
Governing body the R&A does not publish details of how many tests it conducts at The Open Championship.
The International Golf Federation (IGF) will run the drug-testing programme for the Olympics, beginning 13 weeks before the Games. It will include blood testing (at the moment there are only urine tests in golf).
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