Home Search Assay Quality Control Service Overview Request a Quote Contact Us Overview   >> Sample Accession Proficiency Testing Certifications/Accreditations Comparison to ISO Facilities Equipment Specific Equipment Considerations Testing Facilities Operation Test, Control, Articles, Ref. Substances Advanced Search Your shopping cart is empty Can't find an assay? Need help with ordering? Call us at 1-888-541-5227 or email us Covance Receives ISO 17025 Accreditation You have even greater confidence when placing your studies with Covance. 404 Page Not Found The page you are trying to access is no longer available or has been moved to a new location. Please use the navigation tools, our search tool, or visit nutri.covance.com. TOP OF PAGE Prices are subject to change without notice. Prices are for single samples; volume pricing available. All prices are shown in USD. *Price for the first sample of a group/prices for each additional sample of that group. **If initial test is positive, additional fees are required for confirmation.