How long will 8mg of subutex block methadone?

I been taking methadone for 4 years. I didnt have any so I took a subutex from my friend, 8mg. Tomorrow I go back to the methadone clinic. Will the subutex block my dose? If so, for how long?

: http://alcoholdrugstreatment.info/how-long-will-8mg-of-subutex-block-methadone