It never ends 'CERA new generation EPO'

[NotSoBigBen]

http://www.cyclingnews.com/news/colombian-u23-champion-tests-positive-for-cera/?utm_content=buffer07d4c&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer

 

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[J Wakefield]

http://www.cyclingnews.com/news/colombian-u23-champion-tests-positive-for-cera/?utm_content=buffer07d4c&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer

 

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CERA, although being called new or 3rd Gen EPO was used widely around the 2007-09 era. Kohl, Rebellion were all popped for it and it was wide spread at Olympic re-testing as there wasn't meant to be a test for it yet. I am really suprised that this was his EPO of choice all things considered as it has a significantly longer half life than others and was stopped being used way back then due to this and the test.

 

 

 

[NotSoBigBen]

CERA, although being called new or 3rd Gen EPO was used widely around the 2007-09 era. Kohl, Rebellion were all popped for it and it was wide spread at Olympic re-testing as there wasn't meant to be a test for it yet. I am really suprised that this was his EPO of choice all things considered as it has a significantly longer half life than others and was stopped being used way back then due to this and the test.

 

 

I guess the % of stupid cyclists is no different to that of any other sector of the population?

 

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[Long Wheel Base]

CERA, although being called new or 3rd Gen EPO was used widely around the 2007-09 era. Kohl, Rebellion were all popped for it and it was wide spread at Olympic re-testing as there wasn't meant to be a test for it yet. I am really suprised that this was his EPO of choice all things considered as it has a significantly longer half life than others and was stopped being used way back then due to this and the test.

 

 

What exactly does half life mean? I have heard it been used before but have no idea what it means.

[GaryP]

What exactly does half life mean? I have heard it been used before but have no idea what it means.

Hi. Half life, as I understand it, is basically an indication of the length of time that a substance takes to be fully metabolised by your body. Thus, the longer the half life the longer it takes to metabolise and the longer it can be detected in your body... 

[Long Wheel Base]

Hi. Half life, as I understand it, is basically an indication of the length of time that a substance takes to be fully metabolised by your body. Thus, the longer the half life the longer it takes to metabolise and the longer it can be detected in your body... 

Ok so that's why a longer half life is more risky for these poepols who dope? The please don't make me wee in a bottle window is larger.

[Cippo]

Half-life is actually the time it takes for half of the medication taken to be eliminated from the bloodstream. On a side note if athletes test positive for a diuretic ( makes you produce more urine and more frequent urination) it is termed as a masking agent as they are trying to eliminate the medication they took.

[Long Wheel Base]

Half-life is actually the time it takes for half of the medication taken to be eliminated from the bloodstream. On a side note if athletes test positive for a diuretic ( makes you produce more urine and more frequent urination) it is termed as a masking agent as they are trying to eliminate the medication they took.

Why do they only talk about half of it? Are they unable to see only half from a test?

[dave303e]

Half-life is actually the time it takes for half of the medication taken to be eliminated from the bloodstream. On a side note if athletes test positive for a diuretic ( makes you produce more urine and more frequent urination) it is termed as a masking agent as they are trying to eliminate the medication they took.

 

and in mountaineering (the one sport that dopes infinitely more than cycling) acetazolamide is used to prevent and reduse symptoms of altitude sickness

[Duane_Bosch]

Ok so that's why a longer half life is more risky for these poepols who dope? The please don't make me wee in a bottle window is larger.

In Tyler Hamilton's book he refers to it as "glowing"

 

IMO It's a great book for laymen to get their head around doping. I found it a good read and it wasn't aaaaallll Lance Lance Lance.

[mecheng89]

What exactly does half life mean? I have heard it been used before but have no idea what it means.

https://en.wikipedia.org/wiki/Half-Life_(video_game) 

 

Otherwise known as the best game ever made      .

 

Jk. Half life is how long it takes for a material to decay to half its original size or quantity. These days it's used in medicine to determine how long it'll stay in the human body for example.  

[mecheng89]

Why do they only talk about half of it? Are they unable to see only half from a test?

For something to decay to 0 takes an awfully long time (material dependent). A stable material may take many many years, whereas unstable elements may take a matter of days. It just reduces your testing time to half. 

[Fat Boab]

Half life....many processes in nature have been found to be represented by an exponential rate (growth or decay) equation eg you may have heard the description that something is increasing at an exponential rate etc.

 

The rate of such reactions ie the 'speed', can be described by the reaction rate value, but this often is difficult to comprehend, so it can be converted to a half-life (for decay processes), or a doubling-time (for a growth process), and as others have suggested it can be interpreted as the time for half the initial value, or concentration, of a substance, in this case a drug, to be reduced by half.

 

Agreed that the time to reduce an exponential decay equation to a zero concentration is a long time, infact an infinite time, but the use of half-life isn't to reduce testing time so much, as experimental data can be fitted to rate equations to derive half-life values across a range of times.   

 

PS even non-exponential processes can be represented by half-life, but the maths is a bit trickier, but the interpretation is similar. You get the idea.....

[Shebeen]

I see a carbon dating discussion developing.

[dave303e]

I see a carbon dating discussion developing.

 

#sciencemustfall?

[GaryvdM]

Took me a while to expand the acronym, so to save others the time:

wikipedia.org/wiki/Continuous_erythropoietin_receptor_activator