Lance Armstrong denies having "misbehaved" during a random drugs test conducted by the French anti-doping authority last month.
The seven times Tour de France champion was requested, while training in France, to provide urine, blood and hair samples to a tester from the French Anti-Doping Agency.
The Agency said this week that the 37-year-old American behaved strangely when the tester asked him to provide the samples and it sent a report to the International Cycling Union.
The UCI said it could not rule on the matter since the test, which proved to be negative, was commissioned by the AFLD.
Armstrong, who described reports in France on Monday that he had "misbehaved" as outrageous, said he just wanted to have the tester's ID checked before complying with the request.
The Astana rider says he had never heard of labs or governments doing drug testing and he had no idea who the tester was or whether he was telling the truth.
Armstrong says the testers papers were far from clear or impressive and they just wanted to make sure he wasn't some French guy with a backpack and some equipment to take my blood and urine.
Armstrong added everything happened within 20 minutes and that there were no further problems.
It was Armstrong's 24th test since he resumed his career after 3-1/2 years in retirement.