Answer
Dec 17, 2024 - 12:12 AM
Thank you for reaching out about our Basic Prenatal. We really appreciate your outreach and diligence in seeking clarification on our nutritional supplements.
As required by federal regulation, Thorne tests every lot of raw material that it receives to verify the raw material’s identity, purity, and potency. This includes testing the raw material for the presence of suspected contaminants that would be relevant to that raw material, which for every material includes testing for the presence of heavy metals.
Heavy metals standards are based on the upper amount of a heavy metal that is deemed safe to ingest on a daily basis. Every Thorne product meets or is below the heavy metal standards designated by the United States Pharmacopeia (USP). The USP has well-accepted and well-recognized heavy metal exposure standards for medicines, food ingredients, and nutritional supplements, and Thorne has complied with the USP’s heavy metal exposure standards for nutritional supplements for more than 30 years. The USP is an independent, scientific, non-profit organization that sets quality standards for medicines, dietary supplements, and food ingredients in the United States and many other countries.
In addition to the standards set by USP, Thorne also observes the more conservative limits as set by California’s Proposition 65 law, which advises California residents about substances believed to cause harm, such as birth defects. If a daily serving of a nutritional supplement product sold in California exceeds the minimum amount of one of the 800+ Proposition 65-listed substances, then the product label must include a warning notice. The heavy metal content in Thorne’s Basic Prenatal is below the very stringent heavy metal standards set forth in Proposition 65 and does not require a warning notice.
Regarding the results of the test conducted by SimpleLab, Inc and published by Tamara Rubin, the results presented are far below the standards set by both USP and California’s Proposition 65 law.
