Kan Herb Company provides extensive scientific validation. Available for each batch of proprietary product, our Certificates of Analysis attest to the safety and purity of our offerings.

The Chinese government does not certify whether agricultural products are grown organically. Often Chinese herbal companies purchase extracts and ground powders from manufacturers that are not GMP certified (few factories in China have GMP certification). For these reasons, some herbal products made in China are contaminated with heavy metals, unhealthy additives, or even undisclosed chemicals. Because tap water, not purified water, is used in the manufacturing of liquid or concentrated powdered formulas in China, herbal formulas produced in China may contain unacceptable amounts of heavy metals.

To insure that our products are safe, pure, and potent, we send herb samples to independent FDA recognized laboratories for testing. The laboratories conduct the following tests:

• Pesticide screens: The National Food Laboratory (The NFL) performs microbiological conformational testing and multi-residue pesticide tests, screening for over 250 pesticides, using the FDA-published Luke Method.
  
  
• Heavy metal screens: The Toxicology Group, LLC (a wholly owned company of National Sanitation Foundation International) utilizes Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) to test for heavy metals: arsenic, mercury, lead, and cadmium.
  Our formulas are consistently lower than the USP (United States Pharmacopoeia), recommended levels for heavy metals in herbal products, with no more than 3 parts per million (ppm) for any one heavy metal. In Taiwan, 100 ppm for total heavy metal content is acceptable, illustrating how quality standards can vary greatly from one country to another.
  
  
• Microbiological testing: Following FDA BAM methods, NFL validates Kan Herb Company's laboratory tests for safe limits of total plate count, E. coli, yeast, mold and Salmonella.
  
  
• Aristolochic acid testing: Aristolochic acid is a substance found in certain herbs. In May 2000, the FDA recalled herbal supplements containing Aristolochic acid. Exygen Research tests for trace levels of this substance, following the US FDA method, which includes confirmation by Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS).

Unlike some companies that test only randomly, you can be assured that at Kan Herb Company we test each and every batch of proprietary product for safety, purity and consistency. Kan Herb Company's Certificates of Analysis document the results of all laboratory tests performed. For your convenience, we have added the USP (United States Pharmacopoeia) recommended levels, whenever available.

We strongly recommend requesting a Certificate of Analysis for each product you carry in your clinic, whether or not purchased from Kan Herb Company. To view a Certificate of Analysis or find out m ore about the laboratories that we use, click here.