It is important to note that Percutaneous Posterior Tibial Nerve Stimulation (PTNS or electroacupuncture on SP6) is only one element of acupuncture treatment for urological problems. A wide variety of acupuncture points and stimulation methods are available to influence urological function.
Acupuncture Moxibustion. (n.d.). [Urinary acupuncture points - front view]. Acupuncture Moxibustion. Available here.