Sergio Henao is free to return to action with Team Sky after experts concluded there were no further action required over the Colombian's biological passport values.
On April 20, independent experts from the Athlete Passport Management Unit in Lausanne, Switzerland, requested further information from Henao about his values.
But the experts decided there was no basis to proceed further with the case, according to a UCI statement released on Tuesday.
Henao was initially withdrawn from racing in 2014 after his biological passport showed anomalies in his blood profile, which can, in some cases, indicate the use of performance-enhancing drugs, although this was not the case with Henao.
How to make a Team Sky breakfast
As Henao lives as altitude in Colombia, the theory is that switching between high and low altitudes during blocks of racing and training can lead to fluctuations in your blood values, eg haemoglobin level. The percentage of oxygen-carrying haemoglobin in blood increases after spending time at high altitude as the body compensates for less oxygen in the air.
The 28-year-old was withdrawn from racing again just hours before La Flèche Wallonne in April, where he would have been one of the favourites. He finished second in the Tour of the Basque Country for the second successive season this year and also took top-10s at the Tour Down Under and Paris-Nice.
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