Analysis Note This certified reference material (CRM) is produced and certified in accordance with ISO/IEC 17025 and ISO Guide 34. This CRM is traceable to NIST SRM. Biochem/physiol Actions Precursor of glycine by serine hydroxymethyltransferase. General description Certified content by quantitative NMR incl. uncertainty and expiry are given in the certificate.Download your certificate at: http://www.sigma-aldrich.com. Legal Information TraceCERT is a registered trademark of Sigma-Aldrich Co. LLC