thehog said:But one of the reasons for blood doping’s popularity is that until recently athletes could not test positive for their own blood. In the last few years, however, anti-doping laboratories have developed techniques for detecting blood transfusions by looking for suspicious fluctuations in various blood measurements and ratios. They look at reticulocytes and hemoglobin levels, and even look for traces of plasticizers that leach out of blood bags. The more blood samples are collected from an athlete, with scores compared over months and years, the more glaring a sudden spike in one blood value might look. A study of Armstrong’s blood samples, combined with testimony from cooperating witnesses who can pinpoint the dates of alleged transfusions, would make for a compelling presentation if USADA’s action advances into arbitration proceedings.
...that athletes on the blood-doping program would withdraw their blood eight to 10 weeks before the Tour de France, wait for their body to replenish the red blood cells, reinfuse the stored blood, and repeat the process. “You reinsert the older blood, then withdraw the same amount, but this time you withdraw a little more,” the person said. The goal was to get a mixed population of red blood cells in the stored blood bag so that anti-doping officers wouldn’t notice a suspicious spike in the number of old cells. “Any introduction of blood shows a different population of red blood cells,” the person said. “They’ve been sitting in a bag for a month. It doesn’t make sense — a jump in aging red blood cells? If you reinfuse several times you get a count of this many old ones, this many new ones. It’s very balanced... It has a lot of precision and variables.”
Interesting.
I got 1 question though.
`The organization’s letter says data from Armstrong’s blood samples collected in 2009 and 2010 are “fully consistent with blood manipulation.”
Those blood samples are taken by the uci right? How come the uci looks at the samples and apparently concludes they are ´normal´ yet the USADA states they are ´fully consistent with blood manipulation´ ?
