DALLAS, TX - MAY 13: Junior dos Santos arrives at the arena before fighting Stipe Miocic during UFC 211 at the American Airlines Center on May 13, 2017 in Dallas, Texas. (Photo by Cooper Neill/Zuffa LLC/Zuffa LLC via Getty Images)

Junior Dos Santos’ team has received an official copy of the failed USADA urine test which caused the former UFC Heavyweight Champion to be removed from UFC 215.

On Friday, news of Dos Santos’ potential anti-doping violation hit the newswire, much to the dismay of the former champion and Canadian fans who were hoping to see him in action at UFC 215 in Edmonton. The highly anticipated scheduled bout against Francis Ngannou was scratched as a result of the test.

The news took Dos Santos’ team by surprise, as the Brazilian fighter has been very vocal throughout his career about his stance against performance enhancing drugs in the sport of mixed martial arts. The substance that caused Dos Santos to be flagged is hydrochlorothiazide, a diuretic used to treat high blood pressure.

Saturday evening, after receiving a full copy of the urine test from USADA, Dos Santos’ representative Ana Claudia Guedes provided FanSided with an additional statement after having the opportunity to review the full results with the team.

“We now have the official copy of Junior’s August 10 urine test. The level of hydrochlorothiazide listed on his USADA result was “low.” Additionally, the specific gravity reading of Junior’s urine sample was 1.025, indicating that the sample was not diluted. We understand the concentrated urine sample to mean that the low level of hydrochlorothiazide in Junior’s system had no diuretic effect on his sample. We are learning about some recent anti-doping cases where low levels of hydrochlorothiazide have been the result of supplement contamination, and even contaminated ground water. A 2016 study published by the National Institutes of Health found that over-the-counter NSAIDs left hydrochlorothiazide traces (See: https://www.ncbi.nlm.nih.gov/m/pubmed/27611956/). Our goal now is simply to determine the unintended source of the hydrochlorothiazide. To that end, we have identified two nutritional supplements that Junior recently began using–neither of which show hydrochlorothiazide anywhere on their respective labels or ingredient lists– and are working with USADA to test both. Hopefully that gets us answers. All drug tests that Junior has taken–both prior to and post implementation of the USADA program–have been negative, including blood and urine samples he provided on July 10 of this year. He prides himself on being a clean athlete, and looks forward to resolving this matter.”

In a previous statement, Guedes mentioned the “B” sample from August 10 was requested for testing, however, in previous cases, the results are usually similar to the “A” sample.

The team is working hard to find an answer to the cause of the failed test in hopes of clearing Dos Santos’ name so that he may return to action and avoid a lengthy suspension, which could potentially sideline the former champion for a year.