Every fighter on the UFC 184: Rousey vs. Zingano fight card was drug tested, and as of Monday morning, all of them produced negative results. California State Athletic Commission executive director Andy Foster on Friday confirmed to MMAWeekly.com that every fighter on the UFC 184 card provided urine and blood samples for testing. At that point, he only had the results for the urine samples, which were all negative, but on Monday morning, Foster said that the blood test results also revealed no banned substances.
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UFC 184 Drug Tests All Come Back Clean Despite One Abnormal Result – MMA Weekly