The government is considering the introduction of a drug test, similar to a breathalyser, for motorists.
Armstrong was accused of using such drugs by other riders, but never failed a drug test.
On his Twitter page, Armstrong at the time said he never failed a drug test.
He was accused of using performance-enhancing drugs by other riders, but never failed a drug test.
The seven-time Tour de France winner, who never failed a drug test, has consistently denied the allegations.
He blamed the result of the drug test on an anaesthetic injection he had during dental treatment.
Jacobs criticized the UCI, cycling's international governing body, for revealing Landis' abnormal drug test result last week.
The long awaited drug test on Floyd Landis' backup urine sample begins today in a French lab.
It is considering the introduction of a drug test for motorists which would be similar to a breathalyser.
On Monday canoeist Jovino Gonzalez was thrown off the Spanish team after failing a surprise pre-Olympic drug test.
Palmeiro was once slapped with a suspension after a positive drug test but denied using any banned substances.
The latest drug test was ordered by Lieutenant Colonel Paul Gibson, commanding officer of 1 Para, according to The Sun newspaper.
Armstrong has said he never has failed a drug test and has consistently denied participating in any banned practices.
So far, the only American to fail a drug test is judo fighter Nicholas Delpopolo, who was expelled from the Olympics Monday.
In any case, Armstrong isn't likely to fail a drug test now.
Under British Olympic Association rules, Chambers's failed drug test triggers a lifelong Olympic ban and UKA chief Davies wants that extended to all competitions.
Usually, this is because they miss an appointment with their parole officer, fail a drug test or do something else that is stupid but trivial.
Meanwhile, the International Paralympic Committee (IPC) has defended its decision not to drug test all medal-winning athletes, in contrast to what happened at the London Olympics.
He was slapped with the suspension in December after the drug test, which the sports network ESPN, citing unidentified sources, said showed high levels of testosterone.
Additionally, Nike was recently accused of paying a former International Cycling Union president to cover up a positive drug test, which the company has denied.
FORBES: Nike's Disassociation From Lance Armstrong Makes Nike A Stronger Brand
Gatlin won the Olympic gold medal at the Athens Games but his promising career was derailed in 2006 by a positive drug test that led to a four-year ban.
But Chambers, banned in 2003 for a positive drug test, has expressed his determination for closure over his past and has looked determined to let his feet do the talking.
Biological profiles are built up by collating an athlete's drug test results over time, therefore making it easier to detect differences which could indicate the use of a banned substance.
Armstrong has never officially failed a drug test, but the USADA report detailed the ways in which he avoided being caught and claimed that positive tests had been covered up.
Cabrera, a former New York Yankee, was leading the National League in batting this past season when he was banned for failing a drug test due to too much testosterone.
Former teammate Landis, who was stripped of his 2006 Tour de France title after failing a drug test, filed the lawsuit in 2010 against the team, which was sponsored the U.S. Postal Service.
CNN: Feds join whistle-blower lawsuit against Lance Armstrong
Laurenzi's statement comes after Braun publicly blasted Major League Baseball's drug testing system and an arbitration board tossed out a 50-game suspension imposed as the result of the drug test Braun took last year.
Although the contaminated bills do not affect health, Negrusz said, they could cause in a false positive drug test if a person, such as a law enforcement officer or banker, handles contaminated currency repeatedly.
In the seventh instance, in 2000, the U.S. crossed the finish line first but later had the victory revoked after one relay member was found to have been improperly cleared of a positive drug test years earlier.
But Armstrong has long been dogged by doping allegations, with compatriot Floyd Landis -- who was stripped of his 2006 Tour de France title after failing a drug test -- making a series of claims in 2011.
应用推荐