BBC NEWS | Science/Nature | Concerns over Olympic drug test (http://news.bbc.co.uk/1/hi/sci/tech/7516484.stm)
Somewhat amusingly, it turns out that the new brand of EPO that Ricco got caught on was because they'd put a tracer in it!
The tracer won't help with all the cheap knock offs which will soon be piliing out of labs in China & India...on their way to a dodgy interweb site near you soon.
Oh, and the French Customs have stopped and searched the car belonging to the father of the Schleck brothers....
but apparently found nothing, phew!