Lab Testing & Quality Guide

Recommended reading

• Lab Testing & Quality: Complete Guide
  Authoritative hub for lab testing & quality — curated guides, checklists, and definitions.
• Differences between U.S., EU, and China testing standards.
  Differences between U.S., EU, and China testing standards. — practical definitions, checklists, and what to ask suppliers.
• Heavy metals: safe limits and testing methods (ICP-MS).
  Heavy metals: safe limits and testing methods (ICP-MS). — practical definitions, checklists, and what to ask suppliers.
• Microbial testing: how to read results.
  Microbial testing: how to read results. — practical definitions, checklists, and what to ask suppliers.
• Residual solvents and pesticides—when are they required?
  Residual solvents and pesticides—when are they required? — practical definitions, checklists, and what to ask suppliers.
• What’s the difference between in-house vs 3rd-party testing?
  What’s the difference between in-house vs 3rd-party testing? — practical definitions, checklists, and what to ask suppliers.
• What’s the shelf-life of a COA?
  What’s the shelf-life of a COA? — practical definitions, checklists, and what to ask suppliers.
• Which lab tests are required for each ingredient type?
  Which lab tests are required for each ingredient type? — practical definitions, checklists, and what to ask suppliers.
• Why potency and identity testing matters (HPLC, FTIR).
  Why potency and identity testing matters (HPLC, FTIR). — practical definitions, checklists, and what to ask suppliers.

What this hub covers

• Key definitions and why they matter
• Practical checklists and “what good looks like”
• Common pitfalls and how to avoid them
• Links to in-depth, related guides

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