Is the UCI's Biological Passport flawed?

According to a scientist in the Netherlands, the UCI Biological Passport is flawed from both a legal and scientific stand point.

Daniel Benson

Daniel Benson was the Editor in Chief at Cyclingnews.com between 2008 and 2022. Based in the UK, he joined the Cyclingnews team in 2008 as the site's first UK-based Managing Editor. In that time, he reported on over a dozen editions of the Tour de France, several World Championships, the Tour Down Under, Spring Classics, and the London 2012 Olympic Games. With the help of the excellent editorial team, he ran the coverage on Cyclingnews and has interviewed leading figures in the sport including UCI Presidents and Tour de France winners.