Quality, Testing & Sourcing Standards
This document summarizes quality, testing, and sourcing controls used to support batch-specific verification. For archived batch documentation, see the COA / Lab Results hub.
Scope and definitions
“Verification” refers to analytical testing and documentation used to confirm identity and assess purity for a specific batch. “COA” refers to a batch-specific Certificate of Analysis issued by a laboratory. “Sourcing” refers to supplier qualification and chain-of-custody controls for materials and documentation.
Verified
What is verified
Verification focuses on identity confirmation and purity assessment using standard analytical methods. Results are recorded per batch and retained with supporting documentation.
Identity
Confirmation that the analyte matches the labeled compound using method-appropriate reference standards and instrument outputs.
Purity
Assessment of purity and detection of impurities within the limits of the method used and the laboratory’s reporting format.
Method and instrumentation
Documentation of the analytical method (e.g., HPLC, LC-MS/MS) and key parameters sufficient to interpret results at a high level.
Batch traceability
Linkage between a specific batch/lot identifier and its corresponding COA and related documentation.
Methods
How verification is performed
High-performance liquid chromatography (HPLC) is used to separate components and quantify purity-related peaks under defined conditions. Mass spectrometry (MS), including LC-MS/MS where applicable, is used to confirm molecular mass and support identity confirmation. Method selection depends on the compound class, expected impurities, and laboratory capability.
Laboratories
Third-party laboratory role
Third-party laboratories perform analytical testing and issue reports under their own quality systems. The laboratory’s methods, calibration practices, and reporting conventions determine what can be concluded from a COA.
Where third-party testing is used, the COA is treated as batch-specific documentation. COAs are reviewed for internal consistency (batch identifier, dates, analyte name, method references, and reported results). COAs are retained as records; they do not replace broader supplier qualification or handling controls.
A COA is evidence for a specific batch under the laboratory’s stated method. It is not a blanket guarantee beyond the scope of the report.
Documentation note
If a COA is provided, it should be interpreted within the limits of the method and the laboratory’s stated uncertainty. When a COA is not available for a batch, that absence is treated as a documentation gap rather than filled with assumptions.
Batch-specific COAs
Certificates of Analysis are batch-specific. A COA should include a batch/lot identifier, analyte name, test method reference, date(s), and reported results. When COAs are linked on product pages, the link is intended to reference the batch documentation associated with that product’s current lot when available.
Limits
What is not claimed
This documentation is intentionally restrained. It describes verification practices and records. It does not extend beyond what can be supported by batch documentation and method scope.
No medical claims
No claims are made regarding diagnosis, treatment, cure, or prevention of disease.
No outcome guarantees
No guarantees are made regarding individual results, performance outcomes, or biomarker changes.
No universal purity claims
Purity statements are limited to what is reported on a batch COA under the stated method and conditions.
No extrapolation beyond scope
COAs and method outputs are not treated as proof of stability, sterility, safety, or suitability for any specific use unless explicitly tested and reported.