The league announced Wednesday officials with the Canadian Centre for Ethics in Sport (CCES) twice tried to reach Collaros by phone and another time via email over a two-hour period. It added Collaros, 36, failed to respond within 24 hours, which usually would result in a two-game suspension.
The league said after a review it shortened the suspension to one game, citing "extenuating circumstances."
The CFL also stated Collaros has never tested positive for a performance-enhancing drug under the joint CFL/CFL Players' Association drug policy.