Olympians to be tested for HGH

For the first time, Olympians competing in Athens this summer will be tested for the banned substance Human Growth Hormone (HGH).

The drug stimulates muscle-growth and was previously thought to be undetectable.

However, a research team from Southampton University in the UK has come up with a test, involving urine and blood samples being taken from random athletes within an hour after the end of their events.

In a two-stage testing process, scientists say that the samples will show if the athlete has taken HGH up to 84 days before the Games begin.