USADA announced the sanction in a statement on Monday:
De Tomas, 21, tested positive for furosemide, stemming from a
urine sample he provided during the in-competition period on
December 8, 2017, before his bout at the UFC Fight Night event in
Fresno, Calif. Furosemide is a Specified Substance in the class of
Diuretics and Masking Agents and prohibited at all times under the
UFC Anti-Doping Policy, which has adopted the World Anti-Doping
Agency Prohibited List.
De Tomas’ one-year period of ineligibility began on December 29,
2017, the date his provisional suspension was imposed. The
athlete’s positive test also falls under the jurisdiction of the
California State Athletic Commission, which has also sanctioned De
Tomas with a one-year suspension and a $2,500 fine.
De Tomas tapped to an anaconda choke from Alex Perez
1:54 into the second round of their preliminary bout at UFC Fight
Night 123 on Dec. 9 at the Save Mart Center in Fresno, Calif. The
21-year-old Filipino fighter debuted in the Octagon at UFC Fight
Night 111 on June 17, losing a unanimous decision to Naoki
Inoue. “Golden Boy” began his professional career with six
straight triumphs before joining the Las Vegas-based promotion.