A total of 634 doping tests have been conducted so far for the Vancouver Winter Olympic Games, IOC spokesman Mark Adams said here on Thursday.

Of the total, 468 were urine tests and 166 blood tests, said Adams.

Russian ice hockey woman player Svetlana Terenteva was the only one tested positive in an out of competition test for a stimulant that is prohibited in competition. She has been reprimanded.

"I don't know the details of the case, This is a light stimulant. It's not prohibited outside of the Games. It was taken outside of the Games with a prescription and the testing happened just inside the period before Olympic drug testing began," Adams said at the daily press briefing.

"As far as I understand it, the IOC charter gives the World Anti-Doping Agency code priority and the code says that an athlete can be reprimanded. So we are sure that is in line with IOC policy and WADA policy," he added.

Since the leak of opening ceremony rehearsal photos on social networking websites, Adams admitted that it is hard to control people.

"I think largely this is an issue for VANOC. But clearly it's become more and more difficult in an age of social media to control people," Adams said.

"As you may know, the IOC has launched into social media. In fact we just got 1.3 million friends on Facebook in just two weeks."

"It can be a risky affair, but it can be a fruitful affair," said the IOC spokesman.