UFC fighter Jim Wallhead has accepted a nine-month suspension handed down by the USADA for taking a banned substance found during an out-of-competition drug test this past October.

The October 7 test came back for ostarine and its metabolites, which are a dietary supplement product.

“Although no prohibited substances were listed on the supplement label, testing conducted on an independently sourced, unopened container of the product by the WADA-accredited laboratory in Salt Lake City, Utah, indicated that it contained ostarine,” USADA stated. “The presence of an undisclosed prohibited substance in a product is regarded as contamination. Accordingly, the product has since been added to the High Risk List of supplements maintained on USADA’s online dietary supplement safety education and awareness resource.”

Wallhead took to Twitter to explain what happened, saying that a “fresh sealed tub of the product I used” was found to have the banned substance in it and “then USADA sourced their own and that was also contaminated and positive for Ostarine.”

Wallhead (29-11) has dropped both of his UFC fights, falling to Jessin Ayari and Luan Chagas. During his career, he has defeated the likes of Frnak Trigg, Matt Veach and Che Mills.

With the suspension retroactive to the test date, Wallhead will be eligible to return to action in July.