If you're looking for bulk pricing on drug testing kits, you're in the right place. We offer custom panels and discounts based on order volume. Call today and find out how we can help you save on your drug testing budget. Additionally, we are a collection site and service provider for the greater Phoenix area. If your business is in need of on-site drug testing or pre-employment screening services in the Chandler / Gilbert / Mesa area, we have you covered! Here at CTS, we have screening solutions for both individuals and businesses.