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The certified values delivered by this Standard Reference Material (SRM) are intended for use in validating measurement procedures and qualifying control materials produced in-house and analyzed using measurement methods for the determination of albumin, creatinine, or the albumin-to-creatinine ratio (ACR) in human urine. A unit of NIST-3666 consists of four vials, each containing approximately 1.0 mL of frozen pooled human urine. Each vial contains different levels of amount of substance of endogenous albumin, creatinine, and ACR (Level I, Level II, Level III, and Level IV). /// Sample value(s) - please ask for current certificate.



Certificate of Analysis (specimen)

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Product data sheet

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National Institute of Standards and Technology

NIST provides over 1300 Standard Reference Materials® as well as articles and practice guides describing the development, analysis and use of SRMs.

NIST Standard Reference Materials are used by analytical laboratories in industry, academia and government in order to facilitate commerce and trade and to advance research and development. The SRMs are produced by the engineering laboratory, the material measurement laboratory, and the physical measurement laboratory at NIST. They are available for chemical composition, physical properties, and engineering materials.