MoralStone Drug Screening MoralStone Drug Screening 2977 Hwy K Suite 211 O'Fallon, MO 63368 Office: 314-583-1077 Fax: 314-270-5565 info@MoralStoneDrugScreening.com Hours of Operation: 8am - 5pm Monday - Friday Send Us A Message Your Name (required) Your Email (required) Subject Your Message Are You Human? 7 * 3 = ?