• Organization: National Institute of Standards and Technology
• Updated: 2017-01-05 00:00:00

SRM 972a Vitamin D Metabolites in Frozen Human Serum - This Standard Reference Material (SRM) is intended for use as an accuracy control in the critical evaluation of methods for determining the...

• Organization: National Institute of Standards and Technology
• Updated: 2017-01-05 00:00:00

SRM 2973 Vitamin D Metabolites in Frozen Human Serum (High Level) - This Standard Reference Material (SRM) is intended for use as an accuracy control in the critical evaluation of methods for...

• Organization: National Institute of Standards and Technology
• Updated: 2021-06-02 00:00:00

SRM 2969 Electronic files containing certified values and their uncertainties, and the data used to assign those values

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• Organization: National Institute of Standards and Technology
• Updated: 2021-06-02 00:00:00

Electronic files containing certified values and their uncertainties, and the data used to assign those values.

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• Organization: U.S. Department of Health & Human Services
• Updated: 2025-09-06

Vitamin D derivatives having general formula (1) which are hydroxylated at the 24-position and considered as one of metabolites of physiologically active vitamin D derivatives substituted at the 2...

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