Quality Assurance and Testing

Our extensive Quality Assurance program includes label transparency and rigorous ingredient sourcing. In addition, we use third-party laboratories to verify potency and purity of all raw materials and finished products.

  • List minerals by true elemental weight
  • Provide standardizations of herbal extracts to indicate primary active marker compounds
  • Clearly identify any allergens
  • List other ingredients that do not appear in the supplement facts panel
  • Every ingredient supplier must meet rigorous testing and quality criteria to qualify as a Pure Encapsulations supplier
  • We source premium raw materials from trusted industry leaders, including the finest suppliers in the U.S., France, Japan, Switzerland, Germany and Italy
  • We use the most bioavailable forms of vitamins, minerals and other ingredients
  • Raw materials and finished products are screened for environmental contaminants
  • High-risk ingredients have been tested for the presence of genetically modified materials
  • All two-piece capsules are hypoallergenic and vegetarian


Ingredients and finished product:
  • Identity
  • Potency
  • Microbial contaminants
  • Heavy metals, including mercury, arsenic, cadmium and lead
  • Solvent residues (32 compounds)
Herbal ingredients are also tested for:
  • Pesticide residues (70 compounds)
Essential fatty acids and fish/krill oils are also tested for:
  • Acid value
  • Peroxide Value (PV)
  • Anisidine Value (AV)
  • TOTOX (2*PV)+AV
  • 17 dioxins and furans
  • 12 dioxin-like PCBs
  • 7 PCBs
Other (when applicable):
  • Alfatoxins
  • Melamine
  • Allergens


Pure Encapsulations is NSF-GMP registered in the U.S, GMP certified in Canada and exceeds the standards of the United States Pharmacopeia (USP) for supplement manufacturing.


  • We manufacture our own products in Sudbury, Massachusetts. We have an open plant policy for physicians
  • Each piece of equipment is dismantled and sterilized before each production run
  • All manufacturing takes place in temperature, humidity and dust controlled rooms
  • Our warehouse is climate controlled in order to maximize the stability of our raw materials and finished products

Full Label Disclosure

  • Our supplement labels list all ingredients, including the composition of the raw material
  • Standardizations of herbal extracts are provided to indicate primary active marker compounds
  • Minerals are listed by true elemental weight

GMO Policy

All Pure Encapsulations ingredients, including those derived from corn are GMO free. This means that we have obtained statements from our suppliers certifying that the ingredients do not contain GMO. For some nutrients of particular concern, we have done PCR testing to confirm the absence of genetically modified material.


Our Products Are Tested By: