A certificate of analysis is the only practical evidence a buyer gets about what is in a product. It is also easy to present in a way that proves far less than it appears to.
What a real certificate contains
An informative certificate names the testing laboratory, gives a report or sample number, states the date, identifies the specific batch or lot tested, names the analytical method, and reports a numerical purity result against a stated specification.
HPLC is the common method for identity and purity. Mass spectrometry confirms identity more definitively. A chromatogram or spectrum attached to the report is what allows an independent reader to see the actual data rather than a claimed conclusion.
Common ways certificates mislead
No batch number is the most important omission, because a certificate that cannot be tied to a specific production run cannot be tied to the item in your hand. A single undated certificate reused across every product page is the same problem in a different form.
An image with no laboratory name, no report number and no method is unverifiable by design. A purity figure with no chromatogram is a claim, not a result. And a certificate that is two years old tells you about a batch that no longer exists.
What a certificate does not tell you
Purity is not the same as identity of dose. A product can be a genuinely pure compound and still be dosed at a fraction of the label. Purity testing also does not address sterility, which is the relevant question for anything injectable.
Nor does it detect everything absent from the method. A test designed to confirm one compound will not necessarily flag a second, undeclared one. Analytical surveys of internet-sold products have repeatedly found undeclared substances in items sold with paperwork.
Testing on request
Some suppliers provide certificates only on request rather than publishing them, because published documents are routinely copied and reused by unrelated sellers. That is a genuine and widespread problem.
We treat certificates published on site and certificates provided promptly on request as equivalent evidence of testing, and score them the same way. What we do not treat as evidence is a claim of testing with no document forthcoming either way.
Independent verification
Any certificate is supplied by a party with a commercial interest in the result. Independent third-party testing of a purchased unit is the only way to remove that interest from the equation, and it is what analytical studies in the peer-reviewed literature actually do.
Those studies are the reason scepticism is warranted: across multiple surveys, a substantial proportion of products marketed as SARMs contained the wrong compound, the wrong dose, or nothing active at all.
In short
- Look for lab name, report number, date, batch number, method and a chromatogram.
- No batch number means the certificate cannot be linked to the product you received.
- Purity says nothing about dose accuracy or sterility.
- Certificates on request count the same as published ones; a claim with no document does not.
Unfamiliar terminology is defined in our glossary. How we research and grade evidence is set out in our editorial standards, and errors can be reported through corrections.
This article is educational. It is not medical advice, a dosing recommendation, or an endorsement of use. Speak with a qualified medical practitioner about your circumstances.