Corporate Headquarters30-70 East Beaver Creek RoadRichmond Hill, Ontario L4B 3B2(No Onsite Testing) U.S. Headquarters3705 Saunders AvenueRichmond, VA 23227Toll-Free: 1.855.420.7140Tel: 1.804.261.3340Fax: 1.804.215.1749 Hours of OperationMonday – Saturday: 8 am-9 pm EST24 Hour Answering Service Available7 Days a Week Onsite Testing Hours Appointments required. Cancer TestingMonday-Saturday 7:30am – 11:30am Customer Support For questions from existing clients who need support Notice: JavaScript is required for this content. Business Development Group Sales Inquires Partnership Inquiries Investor Relations