Toxicology and drug drive

Forensic Science Services, Accident Investigators and Expert Witnesses

Photographs and video

Tachographs

Toxicology and drug/drive

Vehicle accidents/ examinations/ identificaion

Witness statements

Alcohol

Audio analysis

Breath testing devices incl FTP

Blood and other body fluids

CCTV

Data recovery computers/ mobile phones

DNA/STR

Documents/handwriting

Drugs/hair analysis

Drug traces on items

Electronic tagging (PID)

Facial and body mapping

Toxicology and drug drive

Toxicology deals with the analysis of body fluids for the presence of compounds such as poisons and drugs. In complex cases a toxicologist will consider the compounds detected in a sample and may provide an interpretation of their presence.

Cases where toxicology is significant include date-rape and murder. In the former, whether the complainant's drink had been ‘spiked’ with a drug may be considered. In relation to murder, the possible combined effects of drugs, including alcohol, is often the issue. Consideration of this kind of information requires an experienced toxicologist. Casework enquiries include:

• consideration of the results reported by the Crown and whether their interpretation is correct;

• whether any other drugs could have produced the same analytical results;

• whether a defendant’s history of drug/alcohol abuse could have an effect.

In relation to drug drive cases, we provide comment on;

• results of blood/urine analyses;

• preliminary impairment tests;

• results reported by the medical examiner;

• defendant’s indicated pattern of drug use in the previous 24 hours.