Dietary Supplement Testing


Backed by more than 50 years of in-depth industry experience and expertise, UL testing helps customers in the dietary supplement industry meet evolving consumer and regulatory demands for purity, potency and quality in markets around the world.


UL uses recognized test methods to help products meet global standards, including U.S., Japanese and European pharmacopeia, and the Dietary Supplement Health and Education Act of 1994 (DSHEA).

Dietary supplement testing services include:

  • Analytical Testing: Detects impurities in raw materials and finished products, including heavy metals and pesticides. Confirms product label claims, helping to increase supplement quality. UL’s capabilities include ultraviolet light, gas chromatography/mass spectrometry, high-performance liquid chromatography, ultra-performance liquid chromatography, Fourier transform infrared spectroscopy, inductively coupled plasma and inductively coupled plasma mass spectrometry. Additionally, UL provides analytical method development for unique formulations.
  • Chemical Testing: Includes supplement regulation assessment, test program development, approval standardization, supplier selection criteria, Restricted Substances List (RSL) implementation and training.
  • Claims Testing: Substantiates supplement product performance under the American Society for Testing and Materials (ASTM) and Consumer Specialty Products Association (CSPA) performance test methods.
  • Microbiological Testing: Using the most advanced methodologies to help ensure supplement quality, UL tests for pathogens, biological invaders and other impurities in ingredients and finished products.
  • Regulatory Testing and Compliance – Reviews for label and other regulatory compliance to DSHEA requirements. Numerous accreditations support targeted testing programs developed by our team of quality assurance experts. UL also provides supplement verification.
  • Stability Testing: Standard and accelerated stability testing to qualify products and associated packaging.

UL is a trusted leader in developing industry test methods and standards. We are uniquely positioned to help customers in the dietary supplement industry with established and effective quality assurance programs.

Our testing programs can be customized for the unique regulatory requirements and market needs of our customers. Through independent audits, we help ensure supply chain integrity and the quality working conditions of our customers’ labor force around the world.

By testing to the highest standards with UL, customers and their consumers can be more confident in the quality, safety and performance of dietary supplement products. With three out of four consumers recognizing the UL brand as a symbol of integrity and quality, the UL Verified Mark offers a way to differentiate products on the shelf.


For more information on UL Dietary Supplement Testing, please contact us at 1.847.664.2642.


Dietary Supplements, Vitamins, Herbal Supplements


UL 969 Standard for Marking and Labeling Systems
Association of Analytical Chemists (AOAC) Standardized chemical analysis methods designed to increase confidence in results of chemical and microbiologic analyses
American Chemical Society (ACS) Committee on Analytical Reagents sets the specifications for most chemicals used in analytical testing
American Society for Testing and Materials (ASTM International) Voluntary consensus standards used to improve product quality, enhance safety, and facilitate market access and trade
American Spice Trade Association (ASTA) Industry standards for analytical testing of spices
American Oil Chemists' Society (AOCS) Official methods and recommended practices for analyzing commercial fats and oils
British Pharmacopoeia Authoritative official standards for pharmaceutical substances and medicinal products in the UK
European Pharmacopoeia Harmonizes specifications for medicinal substances of general interest to the population of Europe, and drafts specifications for the growing number of new medicinal substances appearing on the market
Food Chemicals Codex (FCC) Compendium of internationally recognized standards for determining the purity and quality of food ingredients
Japanese Pharmacopoeia Defines the standards for specifications as well as the methods of testing to ensure overall quality of all drugs in principle; plays a role in clarifying the criteria for quality assurance of drugs that are recognized to be essential for public health and medical treatment in Japan
U.S. Pharmacopeial Convention Standards for the identity, strength, quality and purity of medicines, food ingredients and dietary supplements manufactured, distributed and consumed worldwide; enforceable in the United States by the Food and Drug Administration, and developed and relied upon in more than 140 countries