Documentation Policy
What a Certificate of Analysis actually tells you, and what ours doesn't yet
A precise, honest explanation of where our batch documentation comes from today, what it covers, what it doesn't, and where we're taking it next. No vague reassurance, just the actual current state.
What a Certificate of Analysis actually is
A Certificate of Analysis, usually shortened to COA, is a lab's report on a specific tested batch of material: what it found, using what method, on what date. The batch-specificity is the entire point. A COA for one production run tells you nothing certain about a different run of the same product, even from the same manufacturer, which is exactly why a single reused certificate applied across an entire product line, something you'll find on more than one competitor's site, tells you far less than it appears to.
Manufacturing is a batch process. Raw material lots vary, synthesis runs vary slightly in yield and byproduct formation, and purification steps don't produce bit-for-bit identical output every time. A lab report is a snapshot of one specific run at one specific point in time, identified by a batch or lot number precisely because that number is what ties the paper report back to a physical quantity of material. When a batch number on a COA doesn't match the batch number on the vial you're holding, the certificate is describing a different, unrelated production run, no matter how similar the product name looks on both.
Our current status: supplier-sourced documentation
Titeris does not yet operate its own laboratory testing. The documentation we publish against a batch today is our supplier's own third-party testing, credited to the lab that performed it, not presented as work we did ourselves. Where a specific batch has that documentation, the product page links or displays it. Where it doesn't, the listing says so directly.
What our current documentation covers, and what it doesn't
Typical supplier documentation for this category covers two things: identity confirmation, usually via HPLC or mass spectrometry, confirming the vial contains the compound it claims to; and purity, expressed as a percentage. Where a product is a blend, documentation may instead confirm the quantity of each component rather than a single purity figure, which is a different and equally valid, but distinct, kind of result.
HPLC, high-performance liquid chromatography, works by separating a sample's components as they pass through a column at different rates, producing a trace with peaks corresponding to different substances. The size and position of the main peak relative to any minor peaks is how a purity percentage gets calculated. Mass spectrometry adds identity confirmation on top of that, measuring the mass of the separated components to confirm the main peak is actually the compound it's claimed to be, rather than a different substance that happens to elute at a similar time. Together, those two methods answer "is this the right compound" and "how concentrated is it," which is real, useful information, just not the whole picture of a vial's safety.
What that documentation does not typically cover: sterility, endotoxin load, or heavy-metal screening. Those are separate tests, requiring separate methods, and unless a specific listing states otherwise, assume they haven't been run. A high purity percentage tells you about the compound's identity and concentration; it says nothing on its own about contamination from the manufacturing process. Treating a purity figure as proof of overall safety is a common, understandable, and genuinely inaccurate reading of what that number actually measures.
Where we're taking this next
Independent, in-house batch re-testing, meaning sending received stock to a genuinely separate third-party lab ourselves rather than relying solely on upstream supplier documentation, is a real step on our roadmap, not a current claim. We're stating it as a roadmap item rather than dressing it up as already in place, because we've watched other sellers in this category advertise a "verify it yourself" mechanism that later turned out not to work when buyers actually tried it, and having to walk that claim back publicly is a worse outcome than being plain about where we currently stand.
When independent testing is genuinely in place, this page will say so, with the same batch-matched specificity we already apply to supplier documentation. Until then, this page will keep saying exactly what's true: supplier-sourced, credited by name, and not yet independently re-verified by us.
How to read any COA, from us or anyone else
- Check the batch number matches. A COA for a different batch than the one in your hand tells you nothing certain about your actual vial.
- Check what was actually tested. Identity and purity are common; sterility and heavy-metal screening are not, and their absence should be assumed unless stated.
- Check who performed the test. A named, independent third-party lab is a stronger signal than an unnamed or in-house-only result.
- Check the date. An old report on a current listing may not reflect the batch actually being shipped today.
- Check whether you can verify it independently. Some labs offer a public lookup by report ID; others don't. If a seller advertises "verify it yourself" as a feature, actually try it before trusting the claim, since that exact mechanism has broken on other sellers' sites before without them updating the marketing copy that promised it.
Why this whole page exists
The research-peptide category has a real, well-documented trust problem. Independent write-ups and buyer forums describe a consistent pattern: a vendor's certificate looks credible right up until someone checks the batch number against what actually shipped, or asks what a "high purity" figure was measured against and by whom. Contaminated or mislabelled vials from unregulated suppliers carry genuine risks, including heavy metals, bacterial endotoxins, and simple identity mismatches where the vial doesn't contain what the label claims. That risk exists independent of anything the underlying compound itself does; it's a manufacturing and sourcing problem, not a property of the peptide.
Most vendor pages respond to that trust problem with reassurance rather than specifics: a purity percentage in bold, a badge, a claim of "lab tested" with no named lab. We think the honest response is the opposite: name exactly what's tested, name who tested it, name what wasn't tested, and say plainly when current documentation doesn't exist for a given batch rather than leaving a silent gap. That's a slower, less flattering way to build a product page. It's also the only version of "trust us" that's actually verifiable rather than asserted.
Frequently asked
Do you test every product independently?
Not yet. We publish our supplier's own third-party documentation where it exists, credited to the lab, and state plainly when a batch lacks current documentation. Independent in-house testing is a real roadmap item, not a current claim.
What does a purity percentage actually tell me?
It tells you the confirmed concentration of the target compound relative to other detected material, typically measured by HPLC. It does not tell you about sterility, endotoxins, or heavy metals unless a separate test explicitly covers those separately.
Why don't you just claim independent testing if competitors do?
Because it wouldn't be true yet, and we've seen what happens to a business's credibility when a "verify it yourself" claim turns out not to hold up under real scrutiny from an actual buyer. We'd rather tell you plainly what we don't do than have you find out later that a claim didn't hold.