NAC confirms Jon Jones’ positive USADA test was for two estrogen blockers, issues temporary suspension

By Jamie Penick, MMATorch Editor-in-Chief

Jon Jones (photo credit Mark J. Rebilas © USA Today Sports)

We now know the substances for which Jon Jones tested positive in his out of competition drug test by USADA, as the Nevada Athletic Commission revealed them during a hearing on Monday.

Jones was issued a temporary suspension pending a full hearing after he tested positive for hydroxy-clomiphene and letrozole metabolite. The failed test stems from an out of competition test conducted in June, the results of which came back just days before UFC 200, pulling Jones from his main event slot on the card.

Though the test was conducted by USADA, Jones will be subject to discipline under both the USADA guidelines in their deal with the UFC and by the NAC.

Both substances are estrogen blockers, banned due to their potential to offset the effects of other PEDs, as well as the possible ability to restart natural testosterone production stopped by PED use.

Penick’s Analysis: Jones will be fighting this on two fronts, and though he may convince USADA for a reduced suspension, he may not have similar success with the NAC. We’ve seen the commission even in the face of evidence disregard it to make their own hard-line decision. They may decide to make an example of Jones as a big-name coming in front of them, especially since he’s faced discipline for other actions by this same commission in the past. Regardless, don’t expect anything to be resolved quickly.

[Photo (c) Mark J. Rebilas via USA Today Sports]

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