Following the fight, the California State Athletiic Commission confirmed that Johnson tested positive for elevated levels of testosterone. According to a report by MMAFighting.com's Dave Meltzer, who confirmed the news with UFC officials, Johnson had first tested positive for an elevated testosterone/epitestosterone ratio when the post-fight urine test results returned last week. The CSAC then administered Carbon Isotope Ratio (CIR) test on Johnson, which confirmed the initial test results.

As a result, Johnson, who did not apply for a therapeutic use exemption for testosterone replacement therapy, was suspended for nine months by the CSAC. That suspension coupled with his recent losing streak made him expendable.