MEMORANDUM AND JUDGMENT
Petitioner was found guilty of violating the prison disciplinary rule prohibiting inmates from the unauthorized use of controlled substances after his urine twice tested positive for the presence of opiates. Substantial evidence of petitioner's guilt was presented at his disciplinary hearing in the form of the misbehavior report, written by the correction officer who conducted the urinalysis testing, together with the positive laboratory test results and their supporting documentation (see Matter of Bonaparte v. Goord, 289 A.D.2d 913; Matter of Mercado v. Selsky, 270 A.D.2d 550).
We have examined petitioner's assertions that there were gaps in the chain of custody of his urine sample and that the testing thereof was not in accordance with the procedures set forth in 7 NYCRR 1020.4, and find them to be without merit (see Matter of Sierra v. Goord, 241 A.D.2d 617). Any questions regarding the chain of custody of petitioner's urine sample or the probity of the urinalysis testing procedures implemented were sufficiently explained in the hearing testimony presented (see Matter of Graziano v. Goord, 272 A.D.2d 701, 702). Petitioner's remaining contentions, including his allegation of hearing officer bias, have been reviewed and found to be without merit.
Mercure, J.P., Crew III, Spain, Lahtinen and Kane, JJ., concur.
ADJUDGED that the determination is confirmed, without costs, and petition dismissed.