Biolongevity Labs uses MDx BioAnalytical Laboratory, Inc., a veteran-owned US analytical lab for independent compound verification. The COA above is a real example from their Klotho inventory, not a placeholder or generic document.
What the documentation confirms for this batch:
Identity: Confirmed as a-Klotho via mass spectrometry. The spectrum shown is lot-specific, meaning it corresponds to batch QC260075, not a generic product-level test run months earlier.
Purity: 99.71% as determined by liquid chromatography. The chromatography trace is included in the document and is verifiable by scanning the QR code or searching COA260086 directly on mdxbiolabs.com under their Certificates of Analysis tab.
Endotoxin: Passed at the ≤0.05 EU/mL threshold, a meaningful data point for researchers working with sensitive assay conditions where endotoxin contamination would compromise results.
Appearance: White crystals, consistent with properly lyophilized peptide.
Identity and purity verification is performed by MDx BioAnalytical Laboratory. Sterility and endotoxin panels are run by additional specialist facilities — visible in the COA filename conventions (Instamed-FP for finished-product testing; BL-ENDO for endotoxin analysis) — giving each batch a complete documentation chain across three distinct testing functions.
This level of documentation, lot-specific, third-party verified, publicly searchable — is not standard across the research peptide vendor space. Most vendors publish a single COA per product. Biolongevity Labs ties each document to a specific batch with an independent lab signature and a verifiable identifier.
For researchers who need to confirm what they are receiving before it arrives, that is a meaningful operational difference.
