​​​​​​​​​​​Microbiology at University Health Network is a shared service with Mount Sinai Hospital (MSH) and operates under the name UHN/ MSH Department of Microbiology.

It is the largest and most influential hospital-based microbiology team in Canada, providing full microbiology testing services for several Ontario hospitals. The lab offers a full range of high quality microbiology services from routine cultures and susceptibility testing to the molecular typing of organisms. Extensive consultative services are available in the areas of test selection and interpretation, laboratory accreditation and infection control.

Dr. Tony Mazzulli is our shared Chief, Microbiology.

Tests and Consultations


  • Automated specimen processing
  • Bacterial culture and susceptibility testing
  • Molecular detection and epidemiologic typing of Clostridium difficile toxin B
  • Molecular detection of Neisseria gonorrhoeae and Chlamydia trachomatis


  • Fungus culture


  • Molecular detection of a full range of viruses
  • HIV viral load (Public Health Ontario accredited site for viral load)


  • Wide range of viral and non-viral serologies

Infection Control

  • Detection and typing of epidemiologically significant organism

​    Organ Donor Screening​
  • Living and cadaveric organ donor testing
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