Substance Abuse Pre-Treatment Screening Study
Public ClinicalTrials.gov record NCT00439049. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
General Evaluation of Eligibility for Substance Abuse/Dependence Research
Study identification
- NCT ID
- NCT00439049
- Recruitment status
- Recruiting
- Study type
- Observational
- Phase
- Not listed
- Lead sponsor
- The University of Texas Health Science Center, Houston
- Other
- Enrollment
- 7,500 participants
Conditions and interventions
Interventions
- L-Dopa Drug
- Naltrexone Drug
- d-amphetamine Drug
- modafinil Drug
Drug
Eligibility (public fields only)
- Age range
- 18 Years to 60 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Sep 30, 2005
- Primary completion
- May 31, 2026
- Completion
- May 31, 2026
- Last update posted
- Dec 19, 2023
2005 – 2026
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of Texas Medical School- Houston, Dept. of Psychiatry Mental Sciences Institute | Houston | Texas | 77054 | Recruiting |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00439049, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Dec 19, 2023 · Synced May 8, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00439049 live on ClinicalTrials.gov.