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An analysis report, line by line

The notes below explain what each line establishes and — more usefully — what it does not. The values are made up and describe no real batch.

Look up a reference

Enter a product reference to see whether an analysis report has been published for it. A direct link works too — ?ref=VX-RETA-10 resolves on load.

The registry reports only whether a report exists, and links to the laboratory’s own page where one does. It does not restate the results.

REPORT REGISTRY · v2.0
$ awaiting lot identifier...

Three EXAMPLE- records demonstrate a complete, an incomplete and a self-contradicting report. Alongside them sit the products VERAX Research sells, by reference, showing which have a published report and which do not.

Anatomy

What each line establishes

Lot number
EXAMPLE-A1 Has to appear on the vial as well. If the number on the paperwork matches nothing you can physically hold, the document is attached to nothing.
Substance
Reference peptide A (15-mer) What the material is claimed to be. Everything below is measured against this claim — it is the starting assumption, not a result.
Weight stated on the label
5 mg How much was put in the vial. Not how much of the actual substance is in there — see content, further down.
Identity — test used
LC-MS (ESI+) Leaving this line out is the single most damaging omission on a report. Without it, nothing confirms the material is what the top line says it is.
Identity — result
1419.6 Da measured / 1419.5 Da expected What was found, against what was predicted. Both numbers should be printed. A verdict with no numbers behind it cannot be checked.
Purity — test used
RP-HPLC, C18, 220 nm, 0.1% TFA / MeCN gradient The technique and the settings it ran at. A purity figure quoted without this line cannot be interpreted, and cannot be compared with anyone else’s.
Purity — result
98.4 % area The share of what the instrument detected — a share of the signal, not of the weight, and only of what that instrument could see at that setting.
Graph
published, axes labelled The trace the machine produced, with a readable scale. A purity number with no graph is a claim. With one, it can be checked.
How much substance is in there
81.2 % w/w (nitrogen determination) The share of the contents that is actually the substance. The rest is water and salt. A vial can be 98% pure and 81% content at once — both figures are correct, and they measure different things.
Water
4.1 % w/w (Karl Fischer) Freeze-dried material pulls moisture out of the air. Part of the gap between purity and content.
Salt left from purification
TFA, 12.8 % w/w Accounts for most of the rest of that gap. It is not an impurity in the sense the purity figure means — which is exactly why the two numbers differ.
Bacterial toxins
< 0.5 EU/mg (LAL kinetic chromogenic) A separate test entirely. The purity test cannot detect these, so their absence from a report means they were not looked for — not that the result was good.
Sterility
not performed Written down rather than left out. A report that says “not performed” tells you more than one that stays quiet.
Laboratory
Reference Laboratory A · ISO/IEC 17025 Named, with its credentials. An unnamed lab cannot be checked against any register.
Relationship to the seller
no ownership or financial link Rarely printed, and the line that decides whether “independent” is accurate. Accreditation does not cover it.
Dates
made 2026-02-11 · sampled 2026-02-19 · reported 2026-03-02 Three dates in an order that makes sense. A report dated before the batch was made describes a different batch, whatever number is on it.
Signals

What a complete report looks like

+

Both identity and purity are reported

Two tests answering two different questions. Either one on its own leaves a gap that the other fills.

+

The graph is published, with labelled axes

Lets you see the shape of the peaks, and whether the main one is cleanly separated from everything else.

+

The method line is complete

Technique, column, wavelength, gradient — enough for someone else to run the same test and check.

+

Content is given separately from purity

Shows the issuer knows the difference between the two, and expects you to know it as well.

+

Tests that were not done are named as not done

Silence and “not performed” are very different statements. Only one of them is disclosure.

+

The lab is named, with its credentials

Checkable against a public register in about two minutes.

Signals

What should stop you

None of these prove anyone is acting dishonestly. Each one means the document cannot support the conclusion people usually draw from it — which is reason enough to ask for the missing piece.

−

Purity quoted with no method

“99%+” with no technique and no settings describes nothing that anyone could reproduce.

−

Nothing confirms what the substance is

Purity on its own tells you the contents are consistent. It does not tell you what they are.

−

No graph, or an image with no scale

A trace with no axes cannot be read. At that point it is decoration.

−

The lab is not named

Nothing to check, no register to consult, no credential to verify.

−

Identical graphs across different products

Matching background noise or timings on two different substances means one document was reused.

−

Dates missing, or in the wrong order

A report dated before the batch was made cannot be describing that batch.

−

The lot number is not on the vial

The document and the object are unconnected. The report could belong to anything.

−

Purity and content given as a single number

Merging the two overstates how much of the substance is actually present.

The question worth asking first

Before any of the above: does the lot number on the document match the one on the object in front of you? If it does not, nothing else on the report matters.

A perfectly run test on a different batch tells you nothing about this one — and that mismatch is the most common disconnect between a report and the thing it is offered as evidence for.

Try it on an example record Look up a term