so, we all know that kessler has professed his innocence and that he may have produced that positive result b/c of "chinese nutritional supplements"
well, over on cyclingnews there are some notes stating that this could actually be possible and kessler may be telling the truth. "there is a conclusive link between trace contamination of over-the-counter oral nutritional supplements and positive urine test results for a nandrolone metabolite. Frequently these products are contaminated with an oral androstenedione. Trace contamination of androstenedione with 19-norandrostenedione is sufficient to cause urine test results positive for 19-norandrosterone, the standard marker for nandrolone use. Strangely these products do seem frequently to come from China, oral steroid doses as small as 10 µg are absorbed and excreted in urine... studies that indicated that some brands of oral, over the counter nutrition supplements are grossly mislabelled making it very plausible that a rider could unknowingly create a positive test for testosterone... Published on the Journal of the American Medical Association website on the 9 Feb 2000, the following clinical investigation, entitled "Oral Androstenedione Administration and Serum Testosterone Concentrations in Young Men" (JAMA. 2000;283:779-782), found that oral androstenedione, when given in dosages of 300 mg/d, increases serum testosterone and estradiol concentrations in some healthy men"
If kessler pursues this line of defense what are his odds of getting off? what are your personal feelings considering this new information?
I want to believe kessler, but his values were sooo high. the jury is still out for me...
thoughts?
well, over on cyclingnews there are some notes stating that this could actually be possible and kessler may be telling the truth. "there is a conclusive link between trace contamination of over-the-counter oral nutritional supplements and positive urine test results for a nandrolone metabolite. Frequently these products are contaminated with an oral androstenedione. Trace contamination of androstenedione with 19-norandrostenedione is sufficient to cause urine test results positive for 19-norandrosterone, the standard marker for nandrolone use. Strangely these products do seem frequently to come from China, oral steroid doses as small as 10 µg are absorbed and excreted in urine... studies that indicated that some brands of oral, over the counter nutrition supplements are grossly mislabelled making it very plausible that a rider could unknowingly create a positive test for testosterone... Published on the Journal of the American Medical Association website on the 9 Feb 2000, the following clinical investigation, entitled "Oral Androstenedione Administration and Serum Testosterone Concentrations in Young Men" (JAMA. 2000;283:779-782), found that oral androstenedione, when given in dosages of 300 mg/d, increases serum testosterone and estradiol concentrations in some healthy men"
If kessler pursues this line of defense what are his odds of getting off? what are your personal feelings considering this new information?
I want to believe kessler, but his values were sooo high. the jury is still out for me...
thoughts?