The Naval Hospital aboard Marine Corps Base Camp Lejeune is leaving its Laboratory Department open Saturdays from 8 a.m. until noon. Patients interested in taking advantage of this service are required to call ahead of time to schedule an appointment. - The Naval Hospital aboard Marine Corps Base Camp Lejeune is leaving its Laboratory Department open Saturdays from 8 a.m. until noon. Patients interested in taking advantage of this service are required to call ahead of time to schedule an appointment.