What: SRM 3949 is a new material with several improvements compared to the original SRM 1955. It is comprised of three levels of folates in human serum.
Why: This SRM provides quality assurance and control for the measurement of folates in human serum.
Who: SRM 3949 is intended for clinical laboratories, research laboratories, and in vitro diagnostics manufacturers who are performing method development and measurement of folates in human serum.
How: This SRM possesses three levels of folate in frozen serum that better reflect levels observed in the present-day population undergoing folic acid fortification. This new material also contains ascorbic acid to better stabilize the folates and is value assigned for minor folates, which are improvements over the original SRM 1955. This SRM is intended to validate methods and can also be used for qualifying in-house control materials.