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Date Posted: 11:02:04 07/27/06 Thu
Author: House
Subject: Re: i dont think so
In reply to: sundaymorning 's message, "i dont think so" on 10:58:12 07/27/06 Thu

>>Saw this on a tri forum:
>>
>>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retr
>i
>>eve&db=PubMed&list_uids=3390919&dopt=Abstract
>>
>>"Effect of ethanol on the ratio between testosterone
>>and epitestosterone in urine.
>>
>>Falk O, Palonek E, Bjorkhem I.
>>
>>Department of Clinical Chemistry, Huddinge Hospital,
>>Sweden.
>>
>>The testosterone/epitestosterone weight ratio in urine
>>is used to detect cases of doping when an athlete has
>>treated himself with exogenous testosterone. When this
>>ratio exceeds 6, it is considered evidence of
>>testosterone doping. We show here that intake of
>>ethanol can affect this ratio. Ingestion of 110-160 g
>>of ethanol, about 2 g per kilogram body weight,
>>increased the ratio between testosterone and
>>epitestosterone in urine from 1.14 +/- 0.07 to 1.52
>>+/- 0.09 in four healthy male volunteers. The increase
>>ranged from 30% to 90% in the different subjects
>>studied (mean 41%). In cases where doping with
>>testosterone is suspected, the possibility should be
>>considered that at least part of an observed increased
>>testosterone/epitestosterone ratio in urine is
>>ascribable to previous ingestion of ethanol.
>>
>>PMID: 3390919 [PubMed - indexed for MEDLINE]"
>
>that study is from 1988. there's a new method that is
>being used now (assuming the lab is using the more
>recent method)which makes the alcohol false positive
>possibility very improbable. dennis mitchell escaped a
>ban using this excuse in 98 (i think) but i don't
>think it will fly now.


Just throwing out one of a number of things that could cause a false positive. Essentially just providing those that have already sentenced Landis before any B result or response from Floyd something to think about.

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