Anybody have any knowledge of how they use the isotopic analysis to distinguish artificial hormones from natural ones?
Anybody have any knowledge of how they use the isotopic analysis to distinguish artificial hormones from natural ones?
Maybe Landis is an android, and synthetic testosterone is "natural" for his body?
I think they look to see if the the carbon isotopes are 12 or 13 - one comes from plants and so cannot be naturally created by the body and must have come from an external source
Cyborg7 wrote:
Maybe Landis is an android, and synthetic testosterone is "natural" for his body?
Then his human testosterone might be suspicious
I have always been a Lance skeptic. I actually do not agree that every Lance former teammate that gets caught makes him look more guilty. If anything, to me, it seems to make him look more innocent. If they can catch these other people, and they supposedly wanted to get him so bad, why couldn't they?
I think its probably the best doctor scenario. But I believe in him a little bit more than I used to simply because its been proved people can be caught.
=)
actually what they do is check to see the ratio of the isotopes. nature doesn't discriminate against isotopes and will use any carbon atom available and thus provide the 'natural abundance' ratio of carbon isotopes. in the lab, due to kinetics, synthetically manufactured molecules will have a different % of isotopes.
DMulvee wrote:
I think they look to see if the the carbon isotopes are 12 or 13 - one comes from plants and so cannot be naturally created by the body and must have come from an external source
This whole thing begs the question of how anyone would be so stupid to think they could dope the night before a stage where they knew they would be tested!
It's so stuipd that it's a great detective show plot:
1. Jealous teammate taints the sample after the "best stage ever ridden in the tour".
2. Rider turns up positive and denies ever taking the stuff.
3. Brillant detective uncovers team jealousy and reveals the truth about the tainted sample
4. rider is cleared of wrong-doing..
Too bad the truth is probably that he is just *that* stupid.
Agreed. If it is proven that Landis did indeed take Testosterone before his stage 17 huge win, then he has to be the MOST STUPID ATHLETE THERE IS!. This drug is so easy to detect & now they have the test for unnatural testosterone. He would have known the minute he crossed the line that he was going to fail a test & be kicked out of the tour. How stupid can you be? We'll see.
Sure?
Stunning wrote:
Agreed. If it is proven that Landis did indeed take Testosterone before his stage 17 huge win, then he has to be the MOST STUPID ATHLETE THERE IS!. This drug is so easy to detect & now they have the test for unnatural testosterone. He would have known the minute he crossed the line that he was going to fail a test & be kicked out of the tour. How stupid can you be? We'll see.
Is it that easy to detect? I think if you're taking testosterone and epitestosterone supplements, this is one of the easier tests to beat. And they don't run the carbon isotope test unless you fail the ratio test. Something went wrong with what his doctor gave him that day (forgot the epi?) and he tested positive. Those guys dope like this all season long, and through the races.
Haven't you seen the doping plans of some of the cyclists that were recently busted? They were taking EPO one day, testosterone the next, insulin, more EPO, etc, etc. The doctors know how to beat the tests, so they don't even worry about it. They just keep using right through the race.
Sometimes something goes wrong and someone gets caught. Like when Tyler Hamilton and Santi Perez got the wrong bags of blood and therefore tested positive for homologous blood transfusions. If they hadn't messed that up, they never would have gotten busted. Because the tests are easy to beat.
Your assuming he took testosterone. The popular theory is he did not. Rather, he had a blood transfusion of his own blood (illegal, no test exists for this. Hamilton was busted for having a trasnfusion of someone else's blood). The new blood was tainted and he did not know it. This makes sense (medically speaking) and its reasonable to assume why he would have tought he could get away with it. It also explains his shock for the T/E ratio. "I was cheating, but not with testosterone!"
...and Lebron looked 25 when he was 16...all natural right? OJ Mayo has looked 25 since his freshman year.
Alan
Jeeezus KaRist...are you kidding me?
NBA? Just look at LeBron's physical change over the past 4 years.
Look at the growth of his jaw alone since junior year in high school. Although nobody in the league can play defense to save their lives...they do a lot of running, jumping, physical offense...the juice is huge in the NBA.
They of course enjoy rolling a nice fatty at the end of the evening as well.
Let's face it.
You've seen the interviews with Kid Floyd....does he sound like the sharpest tool in the shed to you?
Sounds like any of those Lancaster County inbred hicks...dumber than a box of rocks.
If he loses the title, he should write a tell-all book...not necessarily to narc on other riders, but to reveal what, when, and where...and why about his own doping.
At least he can make a few million bucks on the book...otherwise, with his hip problems, he may fade into a historical footnote penniless.
I'm comin' back to the farm Mamma.
Single Bullet Theory wrote:
Your assuming he took testosterone. The popular theory is he did not. Rather, he had a blood transfusion of his own blood (illegal, no test exists for this. Hamilton was busted for having a trasnfusion of someone else's blood). The new blood was tainted and he did not know it. This makes sense (medically speaking) and its reasonable to assume why he would have tought he could get away with it. It also explains his shock for the T/E ratio. "I was cheating, but not with testosterone!"
He probably did that too. People are asking questions about why he would take testosterone at such a time. I was saying he takes everything all the time.
In this week's "Ironic Times" headlines (
)
"Tour de France winner tests negative for honesty"
"Atlas, Hercules fail drug test"
http://www.clinchem.org/cgi/content/full/48/4/629DEE4 wrote:
Sure?
In the NFL the allowable T/E ratio is something like 16:1, so anything under that is considered clean. For Olympic sports I think the over/under is 4:1. The naturally occuring ratio for us mortals is 2:1.One has to assume that where there is money to be made in sports (think big 3 American sports) there is going to be big-time PEDs.
ambassador orange wrote:
NBA, soccer, obviously the NFL are probably filled with guys taking PEDs - somehow they've stayed under the radar so far. I wonder why?