How to Verify a Vanguard Laboratory COA — and What Its Accreditation Covers

Vanguard Laboratory is a commercial analytical laboratory in Olympia, Washington, registered with its accreditor as Olympic Analytical, LLC dba Vanguard Laboratory. It tests food, water, supplements and pharmaceutical materials, and it also tests research peptides. If a seller has handed you a certificate with Vanguard's name on it, this page covers how to check it against the laboratory's own record, which fields to compare, the pitfalls that are particular to Vanguard's system, and what the laboratory's accreditation does and does not cover.

For the avoidance of doubt: our own lots are tested by ILS Laboratories, not Vanguard. This page is for anyone holding a Vanguard certificate from any seller.

Where the laboratory's record lives

Vanguard's reports are hosted on a separate reporting site, verifiedbyvanguard.com, which the laboratory links from its own homepage at vanguardlaboratory.com under "Verify a COA". According to the laboratory, each report carries a report number and a QR code that opens that report on verifiedbyvanguard.com.

Reach the site yourself, by typing the address or by starting from the laboratory's homepage. A link on a seller's product page might go to the right place, but checking that is the whole point.

The lookup, step by step

1. Read three things off the certificate: the brand name it was issued for, the report number, and the lot or batch number.
2. Open the search page at verifiedbyvanguard.com/search. The search starts with the brand. The page asks you to find a brand to browse its public reports, and to add a product, lot or report number only if you want to narrow the results.
3. Or scan the QR code, then look at the address bar before you look at anything else. It should read verifiedbyvanguard.com. A QR code printed on a forged PDF can point anywhere.
4. Open the record and compare it with the copy you were given, field by field.

What to compare

The laboratory's own guidance is to match the report number, product, batch and named organization. Then go through the results line by line:

• Every reported value. Purity, quantity and any other result should be identical, including units and decimal places. A rounded or "tidied" number on the seller's copy is a discrepancy, not a formatting choice.
• The identity basis. Vanguard reports identity as match or no match, with the basis stated. Its routine method is retention time and UV spectrum matched against a reference standard, taken from the purity run. LC-MS mass confirmation is run only on request or where chromatography can't tell close analogs apart, and it is quoted separately. Read which basis the record names, and don't assume mass spectrometry was used. For why this matters, see HPLC purity vs identity testing.
• The dates. The report date on the record should match the copy, and the tested lot should match the lot printed on your vial. A real report for a different lot says nothing about yours. For more on this, see lot and batch traceability.

Pitfalls specific to Vanguard

A missing record is not automatically a forgery. Vanguard says access depends on the sharing settings its client chose, and results become public only if the client lists them. If the report doesn't come up, the laboratory offers a direct route: email the PDF to testing@vanguardlaboratory.com and the laboratory will check it against its own records. That is a stronger confirmation than any public page, and you don't need the seller's cooperation to use it.

Preliminary and final reports differ by design. Sterility testing takes 14 days, so Vanguard may issue a preliminary certificate with sterility marked pending and then an updated one. The QR code stays the same and always opens the latest version. If your copy shows sterility pending and the record shows a result, you are holding the preliminary version. If a copy presented as final disagrees with the record on any value, that is a real discrepancy.

The Silver, Gold or Elite mark is not a pass. Vanguard sells three testing levels. Silver covers purity, quantity, spectral identity and solubility. Gold adds endotoxin and sterility. Elite adds heavy metals and a fentanyl screen. The laboratory states plainly that the mark means the tests at that level were run and the report is available, and that it does not mean the product passed a specification set by the laboratory. Two practical consequences follow. A Silver mark tells you that endotoxin and sterility were not part of that order. And you still have to read the results themselves.

What the accreditation covers, and what it doesn't

Vanguard holds ISO/IEC 17025:2017 accreditation from A2LA, certificate 6377.01, valid through September 30, 2027. The listing is in A2LA's public directory under the laboratory's legal name, and you should confirm it there rather than on any certificate. Accreditation is an outside body's assessment of a laboratory's competence for a defined list of methods. A2LA's certificate states that it "demonstrates technical competence for a defined scope." It does not cover everything a laboratory does.

The scope document (dated December 22, 2025) lists food microbiology by AOAC methods, gluten, preservatives, trace elements by ICP-MS (EPA 200.8, modified) and residual solvents. The laboratory's own accreditation page states what is not on it: "HPLC peptide purity and quantity, LC-MS identity, USP 85 endotoxin, USP 71 sterility and USP 61 bioburden."

So the purity, quantity, identity, endotoxin and sterility results on a Vanguard peptide certificate are not accredited results. That is not a judgment of their quality. It means no outside body has assessed those particular methods at this laboratory, and the weight rests on the laboratory's own quality system and its record. Vanguard deserves credit for stating the exclusions itself; that is what you should want from any laboratory. Keep in mind that the ISO/IEC 17025 wording on the homepage and reporting site refers to that scope, not to every test the laboratory sells. If the trace-element or residual-solvent lines on your report matter to you, ask the laboratory whether those results were issued under the accreditation.

The general method

Every laboratory's system is different, but the logic underneath is the same: find the laboratory yourself, retrieve its record, and compare. The vendor-agnostic version is in how to verify any COA with the issuing laboratory. For the wider list of warning signs, see peptide COA red flags. For reading the result table itself, see how to read a COA. And for what "independent" should mean in the first place, see what third-party testing means.

For laboratory research use only — not for human or veterinary use.