the three-time Tour de France winner revealed that the saga left him unable to sleep and even losing his hair
Well, at least I know a good purpose that that lost hair could have been put to.
Would microdosing clen below the usual detection thresholds after the Dauphiné and before drawing the blood have been possible and coherent with the positive results during the Tour? Would microdosing clen that way have worked well enough in such a short time (remember Contador had to wait for the clen to disappear from his body, then withdraw his blood then wait for his blood levels to recover)? Questions, questions.
As LMG notes, covered here before. The answer IMO is probably no. That is, IF he took enough CB before/during blood withdrawal to show up at 50 pg/ml in his urine following transfusion, then PROBABLY he would test positive during this period of CB use. As I discussed earlier, a rough estimate is 40 ug daily dose for several days, or 50-60 ug single dose. To make this very clear, he could NOT have waited for the CB to clear his body before withdrawal; if he had done this, a transfusion would not have resulted in 50 pg/ml in his urine. He must have withdrawn the blood while he was using the CB or very soon after he stopped using it. As LMG has pointed out, the relatively low blood levels of CB during usage may have lulled athletes into thinking they can withdraw blood while they are taking the drug. The CB test is carried out on urine, which has a considerably higher concentration than blood beginning some hours after first use and maintained that way throughout use and withdrawal.
In the former case (40 ug daily dose), he would be vulnerable to a positive test throughout the period he was taking CB ( I would guess at least a week), plus at least three days following termination of the program. In the latter case (single somewhat higher dose), the window of testing vulnerability would be very short, just a few days, but probably a single dose wouldn’t help him much with weight loss. I agree with LMG that CB probably is not micro-dosed in the usual sense of that term, certainly not in the way EPO can be. In any case, IMO, if he had used doses much lower than what I have stated here, a blood withdrawal/transfusion would not have resulted in the positive CB test at the Tour.
Whether he could escape detection does depend on the sensitivity of the CB test.If the 2 ng/ml minimum required level was all that was detected, then he might have snuck through. That is, he might have avoided a positive test conducted, say, a day or two after a single dose, or even a day or two after a daily routine was stopped. But even then, unlikely, IMO. And if he was taking CB regularly for a period of time, I would think it highly unlikely that a test during that period would not be positive.
I tend to agree with another poster who said that if Bert had been tested for CB during this critical period in June, it would have been mentioned in the RFEC report,, and/or come out before now. It is a very critical piece of evidence, it could be a game-changer in his case. I am definitely on the skeptic side, and I would be very impressed if it turned out he had passed a CB test between the DL and the Tour. But like other posters here, I interpret “before” the Tour in the interview as ambiguous. Right before the Tour? Doesn’t help much. A week or more before? Helps a lot.
To speculate a little, I would think that he if were going to withdraw blood, it would be immediately after the DL, for two reasons. First, he was tested during that race, you would think they would not test him for at least a little while after, when he is not in competition. And second, he needs to give his body as much time as possible to recover the lost blood before the Tour starts. Of course, his HT would presumably be a little depressed after the DL, so he might want to wait a couple of days for a little recovery. But I'm thinking a CB test in the ten days following the DL would be of maximum help for his case.
If those tests are sufficient to sanction a rider in the absence of a positive test, then surely they are surely sufficient to establish that a rider is clean.
That’s faulty logic. It does not necessarily follow that if all suspicious passports indicate blood doping, then all blood doping results in suspicious passports. In a legal sense there is a relationship that can be exploited for his benefit, but a negative passport is never proof of no doping. Floyd explained how the test is beaten.