"To my knowledge, Brock Lesnar has not notified USADA of his retirement from the UFC," USADA spokesman Ryan Madden recently told Marc Raimondi.
"Therefore, he remains subject to USADA testing and the UFC anti-doping policy."
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Lesnar will now apparently have to balance the demands of performing in the WWE with meeting the anti-doping standards of being a UFC fighter. The heavyweight is set to perform at SummerSlam next month for the WWE.
After his UFC 200 win, Lesnar said he had not yet decided if he would continue competing in the UFC. As he makes up his mind, USADA says he’ll have to continue to undergo its UFC-funded drug testing.