Photo of Dr. David Pittman

David Pittman, MD

Medical Director

Phone: 573-884-4879




Dr. Pittman has extensive experience in Pathology with four board certifications to include Transfusion Medicine and Cytology. He has experience with cell preservation from 10 years of direction of a Bone Marrow & Stem Cell lab. His 10 years as an IRB Chairman enhances his regulatory knowledge of research and complements his passion to provide quality human samples to MU Researchers. Bad samples mean unsuccessful research.

Professional Experience:

  • 9/2012 to present – Adjunct Associate Professor, Department of Pathology, University of Missouri, Columbia
  • 5/2018 to present – Medical Director of the One Health Biorepository
  • 3/2018 to 7/2019 – Interim Medical Director of the Clinical Labs, MU Healthcare
  • 9/2008 to present – Adjunct Associate Professor, University of Missouri, Columbia, School of Medicine, part-time from 2013 to 2018
  • 3/2018 to present – Medical Director of Clinical Laboratories & Tissue Biorepository, Pathology and Anatomical Sciences, University of Missouri Health Sciences Center, Columbia, MO
  • 1/2013 to present – Adjunct Associate Professor in Pathology and Anatomical Sciences, University of Missouri Health Sciences Center, part-time
  • 9/2008 to 7/2012 – Clinical Associate Professor and Vice Chair of Clinical Affairs in Pathology and Anatomical Sciences, University of Missouri Health Sciences Center
  • 9/2009 to 7/2012 – Medical Director of Clinical Laboratories, Pathology and Anatomical Sciences, Univ. Missouri Health Sciences Center
  • 7/1985 to 12/2012 – Pathologist with Boyce & Bynum Professional Pathology Service, Inc. of Columbia, MO and Staff Pathologist at Boone Hospital Center
  • 7/1989 to 12/1999 – Director of Autologous Bone Marrow/Stem Cell Lab at Boone Hospital Center
  • 7/1994 to 7/2007 – Chief, Dept. Pathology, Boone Hospital Center
  • 5/1994 to 12/ 2003 – Chairman, Boone Hospital Institutional Review Board
  • 1/1999 to 12/2007 – Medical Staff Officer, Boone Hospital Center
  • 1/2004 to 12/2005 – Chief of Staff, Boone Hospital Center
  • 7/1982 to 6/1985 – Chief Anatomic Pathology and Medical Director of Immunology at William Beaumont Army Medical Center (WBAMC), El Paso, Texas.

Certification and Licensure:

  • State of Colorado Medical Licensure, January 1981
  • Certification in Anatomic and Clinical Pathology, American Board of Pathology, June 1982
  • State of Missouri Medical Licensure, May 1985
  • Added Certification in Cytopathology, August 1997
  • Added Certification in Blood Banking/Transfusion Medicine October 2001


  • Beta Beta Beta Biological Honorary 1972
  • Phi Kappa Phi Scholastic Honorary 1973
  • Alpha Omega Alpha Medical Honorary 1976
  • Missouri/Illinois Region of the American Red Cross:
    • Chairman, Medical Advisory Committee, July 1998-2000
  • Missouri Cancer Registry Enhancement Project Advisory Board, 1997-1999

Publications and Presentations:

  • 14 publications/19 external presentations to include stem cell, transfusion, cancer & cytology topics:
    • “History, Progress, & Current Molecular Testing in Cancer Diagnosis, Prognosis, & Therapy,” Missouri Tumor registrars Assn. (MoSTRA), 9/2009.
    • “Stem Cell Transplantation, A New Role for the Community Pathologist,” American Society of Clinical Pathology, Fall Meeting October 16-22, 1993.
    • "Workshop--Making Immunological Marker Studies Work", Society of Armed Forces Medical Laboratory Scientists, 9th Annual Meeting, Washington, D.C., March 7-11, 1984.

Photo of Jennifer Schnabel

Jennifer Schnabel

Lab Manager

Phone: 573-882-3732




Jennifer currently works as the Supervisor of the MU One Health Biorepository, and has been at the university since 2006. Her experiences include tissue collection and processing, performing nucleic isolations, bisulfite sequencing, cell culture, cloning, PCR/QPCR, western blots, CPG arrays, cell separations, and immunohistochemistry.

Responsibilities include:

  • Coordinates and administers research activities.
  • Responsible for project planning and ensures that the work scope, study protocol, and regulatory requirements are followed.
  • Develops and maintains recordkeeping systems and procedures.
  • Plans and coordinates research study protocol and the establishment of operating policies and procedures.
  • Primary contact for internal and external requests.
  • Direct and manage the day-to-day activities of staff engaged in the implementation of research/clinical protocols and legal requests.
  • Ensures the smooth and efficient day-to-day operation of research and data collection activities.
  • Monitors the progress of research activities.
  • Develops and maintains records of research activities.
  • Preparation, preservation and oversee storage of human and animal specimens.
  • Order laboratory supplies
  • Review investigator IRB documentation.
  • Ensure laboratory is compliant with the IRB, University’s hospitals, University Environmental Health and Safety, and federal guidelines.
  • Billing associated with requests.


Photo of Suzie Ridenhour

Suzie Ridenhour

Senior Research Specialist

Phone: 573-882-1364




Suzanne graduated with a Master's degree from the University of Missouri in 1994. She has been with the University of Missouri for over 20 years, and has over 30 years working in research laboratories.

Proficient in: Protein isolation, recombinant protein production, Western blots, PCR, real-time PCR, cloning, ELISA, cell culture, IHC, tissue processing and sectioning.