Welcome to the NIDA Recruiting Pre-Screening Site. By answering a few questions we can see if you might pre-qualify for one of our research studies conducted in Baltimore, MD. If it looks like you may qualify, the next step in the screening process is a 15 minute phone interview. Please note that you must be at least 18 years of age, but no older than 75 years of age to participate in the studies that we are currently running.