Am J Psychiatry 1990; 147:777-779
Copyright © 1990 by American Psychiatric Association
Serum prolactin levels during extended cocaine abstinence
CM Swartz, K Breen and F Leone
Department of Psychiatry, University of Health Sciences/Chicago Medical School, IL 60064.
Following a report indicating almost a 100% risk for hyperprolactinemia in
cocaine users after 1 month of abstinence, the authors determined the serum
prolactin concentrations of 23 male inpatients who had abstained from
cocaine for 2-43 weeks. None showed high prolactin levels; this places the
incidence below 12.3% with 95% confidence. These results imply that
persistent hyperprolactinemia requires a medical explanation other than
cocaine abstinence itself.