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Date Posted: 09:46:14 09/22/04 Wed
Author: RockyMtnMerlin
Subject: Doping tests

Consider this from Velonews.com

"Editors,
Re: Detection of Homologous blood doping.

I have searched the scientific literature for publications on this methodology. I have found a single publication, by Nelson et al. November 2003 Haematologica 1284-1295 in which they describe using this technology on a total of 25 patients. It appears to me that, given the difficulties in getting antibody dilutions correct for flow cytometry analysis and the relative novelty of this technology and its lack of validation in other laboratories, that this should be treated as an experimental technology. It is by no means foolproof. Using the results of such a novel technique to make decisions that threaten the career of any professional cyclist, let alone one of Tyler Hamilton's stature, is outrageous. To make such results public before further testing can be done is libelous.

Several questions must be asked at this point:

How valid is the test on a larger population of athletes and normal people?
Can the tests be reproduced in other labs not associated with the one who published the above paper?
Is there any other evidence for blood doping such as high hematocrit or large changes in hematocrit from test to test?
If the test is working is there another possible source of the homologous blood such as surgical procedures?
I hope that Tyler Hamilton can be cleared of this charge as quickly as possible and that there is no lasting taint from this scandal.
Sincerely,
David J. Heard, Ph.D (Biochemistry)
Paris France"

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