Dr George Marshall is an experienced Chemical Pathologist who maintains a broad interest in biochemistry, endocrinology and toxicology. A New Zealand medical graduate, Dr Marshall completed Chemical Pathology training in Brisbane and has been practicing in the field for over 10 years.  Dr Marshall's subspeciality interest is in the field of hair drug testing. Dr Marshall obtained a Postgraduate Diploma in Medical Toxicology in 2023, is an Associate Fellow of the Royal Australasian College of Medical Administrators (AFRACMA) and is an Examiner in Chemical Pathology for the Royal College of Pathologists of Australasia (RCPA).