Answers to the most common questions about lab testing, COAs, accreditation, and regulatory compliance — from supplement brands, researchers, and manufacturers.
Detailed answers sourced from our laboratory team, covering everything from sample submission to understanding your results.
What a COA includes, why retailers require third-party COAs, and what makes one credible vs. potentially fraudulent.
Read guide →A practical walkthrough of every section of a COA — results tables, ND vs. <LOQ, acceptance criteria, and what to flag.
Read guide →The international standard for testing labs — what it certifies, which accreditation bodies matter, and how to verify a lab's scope.
Read guide →Step-by-step: quantities needed, packaging and labeling requirements, shipping conditions, and what paperwork to include.
Read guide →Prop 65 limits for arsenic, cadmium, lead, and mercury; which supplement ingredients carry the highest risk; ICP-MS method explained.
Read guide →USP <467> Class 1/2/3 solvent limits, headspace GC-MS methodology, when testing is required for supplements and hemp extract.
Read guide →Aflatoxins, ochratoxin A, fumonisins, ZEA — which supplement ingredients are highest risk, regulatory limits, and LC-MS/MS testing.
Read guide →FDA 20 ppb action level, EU 4 ppb limit, which foods carry the highest risk, and why cooking doesn't eliminate contamination.
Read guide →What COA documentation Amazon requires, CPC for children's products, what reviewers look for, and how to recover from a listing suspension.
Read guide →HPLC purity, LC-MS identity confirmation, endotoxin limits for injectable peptides, and what a complete peptide COA should include.
Read guide →Submit your samples to our ISO 17025 accreditation pending lab in San Diego. Results in 5–10 business days.