NIDA CTN Common Data Elements
The National Institute on Drug Abuse (NIDA) uses a variety of methods to collect data on adrenaline and cortisol levels. Researchers may use blood or urine samples, saliva swabs, or hair follicle tests to measure these levels. NIDA also uses surveys and questionnaires to collect data from people who have used drugs. This information is then used to create a database that can be used to track trends in drug use.