Providing laboratory services that promote high standards of patient care and medical practice.

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Marshfield Laboratories

Forensic Toxicology / Workplace Drug Testing

Marshfield Labs’ Toxicology Services provides forensic workplace, clinical, theraputic drug monitoring, pain management, and point of care toxicology services.

Previously a SAMHSA certified laboratory, we still adhere to all federal SAMHSA forensic guidelines. Marshfield Labs is CAP certified and is undergoing the process of obtaining a CAP certification in Forensic Toxicology. We maintain a vigorous Proficiency Testing Program to ensure accuracy.

Our laboratory is directed by Dr. Joyce Flanagan who holds a PhD in toxicology and pharmacology. She is certified as a clinical chemist by the ABCC and is a fellow of the National Academy of Clinical Biochemistry.

All specimens tested in our Toxicology Laboratory:

  • Are upheld with complete chain-of-custody
  • Undergo validity testing for dilution, substitution or adulteration
  • Are confirmed by GC-MS
  • Have cut-off levels specifically set for the type of testing
  • Follow strict guidelines of testing and record-keeping