Gregory Zavatsky
Forensic & Clinical Toxicologist
19422 Twin Hills Place
Northridge, CA 91326
818-831-5368 Cell: 818-554-7998

  • 2001 - Forensic Alcohol Supervisor, State of California, Department of Health Services
  • 2000 - Forensic Alcohol Analyst, State of California, Department of Health Services
  • 1981 - California Toxicologist Scientist License, No. MTF157
  • 2007 - American Board of Forensic Toxicology (certified as a Toxicology Specialist Chemist)
  • 2002 - National Registry of Certified Chemists (certified as a Toxicological Chemist)
  • 1983 - Completed courses in Toxicology
    University of California, Berkeley, CA

  • 1982 - Completed one year of graduate courses in Chemistry. Teaching assistant for two semesters.
    University of San Francisco, San Francisco, CA

  • 1976 - B.A. Chemistry
    Indiana University, South Bend, South Bend, IN

Qualified as an expert witness in regard to forensic blood alcohol analysis & interpretation & have testified on drugs of abuse in urine. Have testified over 90 times in Municipal & Superior Courts in Los Angeles, Orange County, Alameda, San Diego, San Bernadino & Ventura counties. Testified in DMV hearings for DUI cases.

  • 2009 - The Zzzz Drugs-From Analysis to Interpretation, RTI, online course

  • 2009 - Fundamentals of LC/MS/MS-RTI online courses

  • 2008 - National Traffic Highway Safety Administration(NHSTA)/IACP Standardized Field Sobriety Testing Practitioner Course, Walden Platt&Associates, Dallas, Texas

  • 2008 - National Traffic Highway Safety Administration (NHTSA)/International Chiefs of Police (IACP) Drug Evaluation & Classification program (DECP) Course Overview, Walden Platt&Associates, Austin Texas

  • 2008 - California Association of Toxicologists, Workshop: Field Sobriety Testing, Prescription Drugs, & DUI, Los Angeles, California

  • 2008 - Society of Forensic Toxicologists Workshop on Critical Flicker Fusion Confusion, Phoenix, Arizona

  • 2008 - Society of Forensic Toxicologists Workshop on Phamacogenomics For Dummies, Phoenix, Arizona

  • 2007 - The International Association of Toxicologists (TIAFT), Symposium VI: Legal Blood Concentration Limits for Driving Under the Influence of NON-Alcohol Drugs.

  • 2007 - Society of Forensic Toxicologists on Beyond Herbals: The Toxicology of Plants, Raleigh, North Carolina

  • 2007 - Society of Forensic Toxicologists on Toxicological Analysis of Drug-Facilitated Crimes for Dummies & Smarties, Too, Raleigh, North Carolina

  • 2007 - Training on Alco Sensor IV/RBT with printer, Intoximeters, Spokane Washington, (Received B.A.T. Breath Alcohol Technician Certificate)

  • 2006 - Society of Forensic Toxicologists Workshop on Standardized Field Sobriety Tests-Principles & Practice.

  • 2006 - Robert Borkenstein Course on the Effects of Drugs on Human Performance & Behavior, Bloomington Campus, Bloomington, In

  • 2005 - Society of Forensic Toxicologists Workshop on Case Studies in DUID (Numbers, Signs, Symptoms & Beyond) two day workshop, Nashville, Tennessee

  • 2004 - Robert F. Borkenstein Course on Alcohol & Highway Safety: Testing, Research & Litigation, Indiana University, Bloomington Campus, Bloomington, IN

  • 2004 - FBI Laboratory Symposium on Forensic Toxicology in Washington, D.C. (SOFT conference)

  • 2003 - Hosted California Association of Toxicologists Quarterly Meeting in November on Drugs & Driving

  • 2001 - Society of Forensic Toxicologists Workshop Urine testing & Human Performance, New Orleans, Louisiana

  • 2001 - Society of Forensic Toxicologists Workshop, Voodoo, Does This Practice use Toxins?

  • 2001 - Society of Forensic Toxicologists Workshop on The Impact of Daubert Joiner,Kumho on Testifying as a Forensic Toxicologist, New Orleans, Louisiana

  • 2000 - Forensic Alcohol Supervisor Course
    California Criminalistics Institute.
    Five-day course including a drinking study covering areas of forensic alcohol involving Title 17 laws, pharmacokinetics, absorption, distribution, & tolerance. Hands-on experience using breath alcohol instruments.

  • 2000 - Forensic Toxicology Extension Course
    California State University Fullerton
    Two-day course covering questions a forensic toxicologist can answer, demonstrations of drug kits for testing saliva & sweat & an overview of forensic toxicology. Hands-on experience in calculations of alcohol & drugs in blood, & performing case reviews for forensic alcohols & drugs of abuse.
    • Calculation of Drug or Alcohol dose in the body
    • Alcohol Effects On Driving
    • Employee Urine Drug Screening & Federal Regulations
    • Clinical Toxicology
    • Drugs & Driving
    • Forensic Toxicology
    • Case Reviews
    • Arsenic
    • Drug Facilitated Sexual Assault
    • Toxicology Laboratory Testing & Interpretation
  • 2006 - The International Association of Forensic Toxicologists
  • 2000 to Present - Society of Forensic Toxicologists
  • 1981 to Present - California Association of Toxicologists
  • December 2008 to Present
    Pacific Toxicology Laboratories
    Chatsworth, CA
    Certifying Scientist and Forensic Toxicologist. Analyze forensic blood alcohols and solid dose narcotic drugs. Also certify drugs results for pain management.

  • July 2007 Present
    NMS Laboratories
    Willow Grove, PA
    Forensic & Clinical Toxicology Consultant

  • June 2005 to Present
    Gregory Zavatsky & Associates,LLC
    Forensic & Clinical Toxicology Consultant
    Northridge, CA

  • March 2000 - May 2005
    Supervisor of Forensic Toxicology
    Forensic Toxicology Associates
    Woodland Hills, CA
    Supervised & performed forensic toxicological analyses: forensic blood alcohols, under Title 17 regulations & narcotics analyses, (qualitative & quantitative). Perform urine screening for drugs by immunoassay using the HITACHI 717 & confirmation by GC/MS. Performed screening & quantitations of drugs in the blood. Maintained GC, GC/MS instruments. Assist in supervision of laboratory assistants. Analyzed pills, powders, unknown liquids, & many other items for traces of drugs. Assisted lawyers in preparing for cases. Testifed in court for alcohols & narcotics. Performed reweighs of drugs at crime laboratories & Forensic Toxicology Associates.

  • December 1999 - March 2000
    Pacific Toxicology Laboratories
    Certifying Scientist
    Certified positive & negative drug screen results in a SAMSHA laboratory.

  • April 1995 to June 1995
    Special Chemistry Department
    Specialty Laboratories
    Santa Monica, CA
    Trained on the ICPMS, & analyzed trace & heavy metals including selenium, arsenic, lead, cadmium, copper & zinc in blood samples.

  • March 1995 to Present
    Toxicology Supervisor
    Clinical Toxicology Department
    Quest Diagnostics, Inc.
    West Hills, CA

    Supervise the night shift. Responsible for production, employees, & other administrative duties. Also perform validations for new instruments. Perform analysis of drugs & metabolites in biological fluids utilizing GC/MS, GC, & immunoassay including ElA.

    December 1991 - December 2001
    Kaiser Permanente Regional Lab, North
    North Hollywood, CA

    Performed analysis of drugs & metabolites in biological fluids, utilizing GC, GC/MS, HPLC, spectrophotometry, & immunoassay. Used turbochrom software for GC & HPLC. Maintained & troubleshot analytical instrumentation used. Worked as a team member with other sections & functioned as the nighttime Safety Officer.

  • October 1994 - March 1995
    ANSYS Inc.
    Laguna Hills, CA

    Involved with training & technical support for clients. Maintained client business & research & development in thin layer chromatography & solid phase extraction.

  • September 1990 - September 1994
    Supervisor of Clinical & Forensic Toxicology
    Damon Reference Laboratory
    Newbury Park, CA

    Responsible for maintenance of all laboratory equipment within the department & supervision of 30 employees in the forensic & clinical toxicology laboratory. Served on the Quality Assurance Committee. Wrote Standard Operation Procedures (more than 50). Prepared all assay validations for all new procedures. Acquired many computer skills related to new instrumentation software. Worked closely with the technical manager of chemistry & toxicology & was involved with in-service training of employees. Performed research & setup procedures in GC/MS, GC, HPLC, & immunoassay. Prepared monthly reports on quality control & assurance, resolved problems, prepared departmental budgets, & provided information for contract associations. Testified in court as required. Analyzed solid dose narcotics.

    September 1985 - September 1990
    Supervisor of Clinical & Forensic Toxicology
    MetWest/BPL Toxicology Laboratories
    Tarzana, CA

    Responsible for supervision of 20 employees in the forensic & clinical laboratory. Performed research & setup procedures in GC, GC/MS, HPLC, RIA, & immunoassay. Wrote all Standard Operating Procedures & prepared all assay validations. Responsible for maintaining & troubleshooting all HPLC's, GC/MS, GC, spectrophotometers, & immunoassay equipment. Demonstrated strong problem solving abilities. Acquired laboratory automation experience. Maintained all required documentation for compliance with regulation for State & Federal codes. Acted as Safety Officer & implemented all training & instructions for safe disposal of waste. Resolved technical problems & prepared departmental budgets. Performed forensic analyses on unknown samples, powders, blood & urine alcohols, & some tissues. Testified in court as required. Analyzed solid dose narcotics.

  • March 1981 - March 1985
    Smith Kline-Bio Science
    Woodland Hills, CA

    Performed clinical analyses on emergency drug screens & therapeutic drug monitoring in biological fluids, utilizing GC, HPLC, immunoassay, RIA, & TLC.

  • March 1978 - March 1981
    Forensic Toxicologist
    County Coroners Laboratory, Associates in Lab Medicine
    Tucson, AZ

    Responsibilities included analysis of biological fluids & tissues for drugs using GC, TLC, UV-VIS, & RIA. Received one year of company training. Held forensic alcohol license & testified in court.

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