It turns out that one of the metabolites of ATD (an oral aromatase inhibitor marketed as Novedex XT by Gaspari Nutrition) will cause a positive result on a doping analysis…it will appear that the athlete has taken boldenone (Equipoise). It’s not “spiked” or adulterated, but the actual compound happens to be metabolized into boldenone (Equipoise) and a boldenone metabolite as well. Again, this does not mean that Novadex XT is contaminated or adulterated, but simply that it converts to trace amounts of a banned substance in the body.
Another study on Novedex XT (not the abstract I printed below) shows that it is a good fat loss agent, but indicates (to me) that it is highly unlikely that it converts to enough Boldenone to cause an anabolic effect.
This could be a possible explanation for yesterday’s Major League Baseball positives…
Rapid Commun Mass Spectrom. 2009 Jan 30;23(2):207-218.Click here to read Links
Metabolism of androsta-1,4,6-triene-3,17-dione and detection by gas chromatography/mass spectrometry in doping control.
Parr MK, Fußhöller G, Schlörer N, Opfermann G, Piper T, Rodchenkov G, Schänzer W.
Center for Preventive Doping Research, Institute of Biochemistry, German Sport University Cologne, Cologne, Germany.
The urinary metabolism of the irreversible aromatase inhibitor androsta-1,4,6-triene-3,17-dione was investigated. It is mainly excreted unchanged and as its 17beta-hydroxy analogue. For confirmation, 17beta-hydroxyandrosta-1,4,6-trien-3-one was synthesized and characterized by nuclear magnetic resonance (NMR) in addition to the parent compound. In addition, several reduced metabolites were detected in the post-administration urines, namely 17beta-hydroxyandrosta-1,4-dien-3-one (boldenone), 17beta-hydroxy-5beta-androst-1-en-3-one (boldenone metabolite), 17beta-hydroxyandrosta-4,6-dien-3-one, and androsta-4,6-diene-3,17-dione. The identification was performed by comparison of the metabolites with reference material utilizing gas chromatography/mass spectrometry (GC/MS) of the underivatized compounds and GC/MS and GC/tandem mass spectrometry (MS/MS) of their trimethylsilyl (TMS) derivatives. Alterations in the steroid profile were also observed, most obviously in the androsterone/testosterone ratio. Even if not explicitly listed, androsta-1,4,6-triene-3,17-dione is classified as a prohibited substance in sports by the World Anti-Doping Agency (WADA) due to its aromatase-inhibiting properties. In 2006 three samples from human routine sports doping control tested positive for metabolites of androsta-1,4,6-triene-3,17-dione. The samples were initially found suspicious for the boldenone metabolite 17beta-hydroxy-5beta-androst-1-en-3-one. Since metabolites of androst-4-ene-3,6,17-trione were also present in the urine samples, it is presumed that these findings were due to the administration of a product like ‘Novedex Xtreme’, which could be easily obtained from the sport supplement market. Copyright (c) 2008 John Wiley & Sons, Ltd.
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Originally Posted by system admin
