Determining Genetic Biomarkers Predictive of the Development of Prescription Opioid Addiction

This is a clinical study on patients who have been prescribed opioids (narcotic pain relievers) for the treatment of pain, to determine what genetic factors influence outcome of treatment. Procedures include: an initial telephone prescreening, completion of a number of questionnaires, and a blood draw to determine genetic factors. Participants will take part in a one-time clinic visit, during which all procedures will be completed. The investigators hypothesize that several classes of genes, including genes in opioid, pain, and reward pathways, will differentiate opioid-dependent subjects from opioid-exposed nondependent subjects.