Klotz L, et al. - Whether or not the duration of induction androgen deprivation therapy (ADT) influences the duration of the off-treatment interval and the recovery of serum testosterone (T) in men with localized prostate cancer receiving intermittent androgen deprivation therapy for biochemical recurrence following radical local therapy was determined. No difference was noted in the duration of the off-treatment interval or the rate of testosterone recovery whether or not the men received 4 or 10 months of induction ADT.