Eprex, Roche's NeoRecormon and Amgen's Epogen are all versions of the same hormone, erythropoietin, or EPO.
Amgen has only recently entered the European market with Aranesp, a longer-lasting version of EPO.
Another racer in that event, Gabriele Guarini, 50, also tested positive for EPO, according to Usada.
And while EPO's effect is long-lasting, the hormone itself rapidly disappears from the body.
Kelli Smith will miss the Olympics after admitting to using EPO, a performance-enhancing drug.
In addition, the EPO will choose a new president in the next few months.
He detailed the use of EPO, hormones, amphetamines, corticoids, steroids, testosterone and cocktails including heroin and cocaine.
They say that anti-doping officials should determine if a sample has any evidence of naturally produced EPO.
The Russian also spoke out against the introduction of EPO testing this year.
The test also picked up more than two-thirds of the athletes who had been given EPO three weeks before.
Newer tests that may pick up EPO use can not detect Aranesp, Amgen's newer, longer-lasting version of the protein.
Even if the testers could somehow eliminate all use of EPO and Aranesp, the battle would hardly be over.
The line sports slogans such as "no limits", "pure winner", '0% epo, 100% eco' and "all good things come in three".
They were testing for EPO, which hadn't been detectable at the time.
They, and the EPO itself, are worried that a unified process with a lower cost to companies would result in lower revenues.
The artificial red cell booster, EPO, hit endurance sports in the 1990s.
The testing took advantage of improved technology to seek evidence of the prohibited use of CERA, a new strain of EPO, and insulin.
In the CBS interview, Hamilton, who retired in 2009 after twice testing positive himself, says he first saw Armstrong use EPO in 1999.
CNN: Lance Armstrong refiles suit against anti-doping agency
He then began taking EPO for the first time in his career, the athlete said, adding that he administered his final dose on July 29.
"At these selected matches, four players are to undergo a doping control and out of those selected, one is drawn for EPO, " continued the statement.
If it hasn't, it should be classed as suspicious because the use of artificial EPO for doping causes the body's own production to shut down.
The EPO has only three official languages: English, French and German.
According to evidence submitted to the court, banned substances such as EPO, HGH, testosterone, insulin and fertility drug Human Menopausal Gonadotropin were sometimes combined with the transfusions.
Cera is an advanced version of the endurance-enhancing hormone EPO.
Secreted proteins, which include growth hormone, insulin and EPO (erythropoietin), are used by the body as molecular messengers to pass signals from one part of the body to another.
Some of these medicines, like EPO and anabolic steroids, do improve athletes performance to such a degree that those who do not use them are at a severe disadvantage.
More practically, the number of daily drug tests will be increased to 10 and the new EPO test will be carried out at the Tour for the first time.
Blood doping, the blood booster EPO, human growth hormone, testosterone the panoply of drugs and methods that many riders used when cycling became chemical warfare in the 1990s.
Some scientists who track and monitor the development of copycat EPO drugs say there could be up to 80 different versions now being manufactured in different parts of the world.
Testing for EPO directly is difficult because the synthetic version is almost indistinguishable from its natural form - a version of the hormone was originally created to treat severe anaemia.
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