Delta-9-tetrahydrocannabinol concentrations in hair after oral administration of dronabinol

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00006148

Enrollment

Registered

2014-05-08

Start date

2014-05-24

Completion date

Unknown

Last updated

2025-10-06

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

Conditions

toxicological hair analysis, healthy participants

Interventions

Group 1: oral intake of 3 times daily 2.5 mg dronabinol capsules over a 30 day period

Eligibility

Sex/Gender

Male

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Minimum hair length 3 cm

Exclusion criteria

Exclusion criteria: cannabis consumer

Design outcomes

Primary

Measure	Time frame
Liquid chromatography tandem mass spectrometry analysis of THC (Delta-9-Tetraydrocannabinol) and THC-COOH (Delta-9-Tetraydrocannabinolcarboxylic acid) concentrations in hair samples from the participants (Sampling: Prior to first ingestion, weekly during and up to 4 weeks past the intake period)	—

Secondary

Measure	Time frame
Comparison of the results with data from forensic hair samples	—

Countries

Germany

Contacts

Public ContactVolker Auwärter

Universitätsklinikum Freiburg / Rechtsmedizin Forensische Toxikologie

volker.auwaerter@uniklinik-freiburg.de07612036862

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026