Skip to content

Whole Blood-plasma-oral Fluid Ratios of Psychoactive Drugs and Medicines

DRUID Sub-study: Substance Concentration Ratio/Impairment

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT00650130
Enrollment
300
Registered
2008-04-01
Start date
2008-05-31
Completion date
2011-10-31
Last updated
2013-11-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Driving Under the Influence

Keywords

driving under the influence, psychoactive substances, oral fluid, whole blood, plasma, Ratio of psychoactive substances in whole blood-plasma-oral fluid, Prevalence of psychoactive substances in road traffic

Brief summary

The aim of this study is to get new information on the whole blood-plasma-oral fluid ratios of psychoactive drugs which are encountered in traffic. Samples are taken from drivers suspected of being under the influence of drugs or medicines. The samples are analysed with immunological methods and GC-MS. Observations from Police and a physician on impairment are combined with the results of the different bodily fluids. Observational evaluations and substance concentrations are compared.

Interventions

None listed

Sponsors

University of Helsinki
CollaboratorOTHER
Ministry of Internal Affairs, Finland
CollaboratorUNKNOWN
European Commission
CollaboratorOTHER
Finnish Institute for Health and Welfare
Lead SponsorOTHER_GOV

Study design

Observational model
CASE_CONTROL

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* 18 years or older * driver of a motorised vehicle

Exclusion criteria

* 17 years or younger * not the driver of a motorised vehicle

Design outcomes

Primary

MeasureTime frame
ratio of psychoactive drugs/medicines in whole blood-plasma-saliva and correlation to symptoms of impairment1 year

Secondary

MeasureTime frame
prevalence of psychoactive substances in the general driving populationthree years

Countries

Finland

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026