The UFC featherweight competitor tested positive for human chorionic gonadotropin (hCG) following the UFC year-end show back in December, which prompted the nine-month suspension from the Nevada State Athletic Commission.
The decision to suspend Siver took place on Thursday afternoon at a monthly commission meeting, where NSAC commissioner Pat Lundvall and the remainder of the board voted unanimously on the suspension. Apart from his nine-month suspension, which Lundvall claims is the maximum suspension length handed down to first-time abusers in Nevada, Siver was also fined 30% of his fight purse, which was $19, 800.
Siver had released a statement last month, where he blamed his new trainer and a supplement for the positive drug test. The NSAC did not believe his story and carried out the suspension shortly thereafter.
The German native's win over Manny Gamburyan was also overturned to a no-contest.
NSAC also revealed that if Siver wishes to compete in Nevada following his suspension, he would need to provide a urine sample to be considered for licensure.
The UFC is yet to release a statement regarding the suspension.