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.Abstract Teaser