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List of works by Joseph M Betz

A free new dietary supplement label database for registered dietitian nutritionists.

scientific article

AOAC SMPR 2015.014.

scientific article

AOAC SMPR 2015.016

scientific article published on 01 February 2016

AOAC SMPR 2016.013

scientific article published on 01 January 2017

AOAC SMPR 2016.014

scientific article published on 01 January 2017

AOAC SMPR 2016.015

scientific article published on 01 January 2017

AOAC SMPR 2016.016

scientific article published on 01 January 2017

AOAC SMPR(®) 2016.003

scientific article published on 01 July 2016

AOAC SMPR(®) 2016.004.

scientific article published in July 2016

AOAC SMPR(®) 2016.005.

scientific article published in July 2016

AOAC SMPR® 2015.016. Standard Method Performance Requirements (SMPRs) for Determination of Vitamin D in Dietary Supplement Finished Products and Ingredients.

scientific article published in July 2017

AOAC SMPR® 2017.009. Standard Method Performance Requirements (SMPRs) for Quantitation of Aloe Vera Characteristic Water-Soluble Main Constituents in Dietary Supplements

scientific article published in July 2017

AOAC SMPR® 2017.010. Standard Method Performance Requirements (SMPRs) for Identification of Aloe Vera in Dietary Supplements and Dietary Ingredients.

scientific article published in July 2017

Analytical ingredient content and variability of adult multivitamin/mineral products: national estimates for the Dietary Supplement Ingredient Database

scientific article published on 14 December 2016

Baseline Assessment of 25-Hydroxyvitamin D Assay Performance: A Vitamin D Standardization Program (VDSP) Interlaboratory Comparison Study.

scientific article published on 19 August 2017

Baseline Assessment of 25-Hydroxyvitamin D Reference Material and Proficiency Testing/External Quality Assurance Material Commutability: A Vitamin D Standardization Program Study

scientific article published on 10 August 2017

Certification of elements in and use of standard reference material 3280 multivitamin/multielement tablets

scientific article published in November 2013

Certification of standard reference materials containing bitter orange.

scientific article published on 20 April 2008

Certification of vitamins and carotenoids in SRM 3280 multivitamin/multielement tablets

scientific article published on 3 December 2010

Challenges in Developing Analytically Validated Laboratory-Derived Dietary Supplement Databases

scientific article published on 01 August 2018

Characterization of a suite of ginkgo-containing standard reference materials

scientific article published on 07 July 2007

Chiral Gas Chromatographic Determination of Ephedrine-Type Alkaloids in Dietary Supplements Containing Má Huáng ⬇️

Conversions of β-Carotene as Vitamin A in IU to Vitamin A in RAE

scientific article published on 01 May 2020

Culinary Spice Plants in Dietary Supplement Products and Tested in Clinical Trials

scientific article published on 15 March 2016

Determination of Major Phenolic Compounds in Echinacea spp. Raw Materials and Finished Products by High-Performance Liquid Chromatography with Ultraviolet Detection: Single-Laboratory Validation Matrix Extension ⬇️

scientific article published on September 1, 2011

Development and Certification of a Standard Reference Material for Vitamin D Metabolites in Human Serum ⬇️

scientific article published on December 28, 2011

Development and certification of green tea-containing standard reference materials

scientific article published on 30 November 2011

Development of Standard Reference Material (SRM) 2973 Vitamin D Metabolites in Frozen Human Serum (High Level).

scientific article published in September 2017

Development of an Improved Standard Reference Material for Vitamin D Metabolites in Human Serum.

scientific article

Development of botanical and fish oil standard reference materials for fatty acids

scientific article published in February 2013

Development of saw palmetto (Serenoa repens) fruit and extract standard reference materials

scientific article

Development of the analytical methods and reference materials program for dietary supplements at the National Institutes of Health.

scientific article published on January 2004

Dietary Supplement Ingredient Database (DSID) and the Application of Analytically Based Estimates of Ingredient Amount to Intake Calculations

scientific article published on 01 August 2018

Dietary supplement ingredient database (DSID): Preliminary USDA studies on the composition of adult multivitamin/mineral supplements

scientific article published on February 2008

Dietary supplement laboratory quality assurance program: the first five exercises ⬇️

scientific article published on May 1, 2011

Dietary supplement use in the United States, 2003-2006

scientific article

Disintegration and Dissolution Testing of Green Tea Dietary Supplements: Application and Evaluation of United States Pharmacopeial Standards

scientific article published on 18 February 2020

Establishing an Accuracy Basis for the Vitamin D External Quality Assessment Scheme (DEQAS).

scientific article published on 29 August 2017

Feasibility of including green tea products for an analytically verified dietary supplement database

scientific article

General Steps to Standardize the Laboratory Measurement of Serum Total 25-Hydroxyvitamin D.

scientific article

How Accurate Is the Labeled Content of Prescription Prenatal Multivitamin/mineral (MVM)? -an Analytical Pilot Study for the Dietary Supplement Ingredient Database (DSID) (OR14-08-19)

Interlaboratory Trial for Measurement of Vitamin D and 25-Hydroxyvitamin D [25(OH)D] in Foods and a Dietary Supplement Using Liquid Chromatography-Mass Spectrometry.

scientific article published on 05 April 2016

Interlaboratory analytical comparison of fatty acid concentrations in serum or plasma

scientific article published on 20 September 2016

Measuring vitamins and minerals in dietary supplements for nutrition studies in the USA.

scientific article published on 20 July 2007

Mission and activities of the NIH Office of Dietary Supplements

Nanotechnology research: applications in nutritional sciences

scientific article (publication date: 2010)

Optimization and single-laboratory validation study of a high-performance liquid chromatography (HPLC) method for the determination of phenolic Echinacea constituents

scientific article published on 15 May 2010

Preparation and characterization of a suite of ephedra-containing standard reference materials

scientific article published on 01 November 2006

Progress in developing analytical and label-based dietary supplement databases at the NIH Office of Dietary Supplements

scientific article

Progress in development of an integrated dietary supplement ingredient database at the NIH Office of Dietary Supplements

scientific article

Role of the National Institute of Standards and Technology (NIST) in Support of the Vitamin D Initiative of the National Institutes of Health, Office of Dietary Supplements

scientific article published in September 2017

Serum unmetabolized folic acid in a nationally representative sample of adults ≥60 years in the United States, 2001–2002 ⬇️

scientific article published on April 2, 2012

Standard reference materials for dietary supplement analysis

scientific article published on 01 May 2013

Summary of an NIH workshop to identify research needs to improve the monitoring of iodine status in the United States and to inform the DRI.

scientific article published on 02 May 2012

The Challenge of Reproducibility and Accuracy in Nutrition Research: Resources and Pitfalls

scientific article published on 15 March 2016

The Dietary Supplement Label Database: Recent Developments and Applications

scientific article published on 03 August 2018

The Importance of Method Selection in Determining Product Integrity for Nutrition Research

scientific article published on 15 March 2016

The NIH analytical methods and reference materials program for dietary supplements

scientific article published on 31 May 2007

The caffeine contents of dietary supplements commonly purchased in the US: analysis of 53 products with caffeine-containing ingredients

scientific article published on 3 August 2007

The development and implementation of quality assurance programs to support nutritional measurements

scientific article published on 4 April 2013

Unmetabolized serum folic acid and its relation to folic acid intake from diet and supplements in a nationally representative sample of adults aged > or =60 y in the United States

scientific article

Value Assignment of Vitamin D Metabolites in Vitamin D Standardization Program Serum Samples

scientific article published on 16 June 2017

Variability in vitamin D content among products for multivitamin and mineral supplements.

scientific article

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