What a COA Cannot Tell You

Part 1 — The Supply Chain

Everything on the page, in the order a chemist would read it

Nothing on this page is difficult. It is simply unfamiliar, and unfamiliarity is what makes a weak certificate look like a strong one.

Part 2 — The Supply Chain

Who signed this, and what did they undertake by signing it

What the Journal asks when a document arrives unsigned, and what the answers have been.

Part 3 — Analytics

The fourteen-day problem, and what it does to a commercial testing model

Endotoxin is the more tractable of the two questions, and a kinetic chromogenic determination is neither slow nor exotic. It is simply not on the menu.

Part 4 — The Supply Chain

What Janoshik would need in order to certify sterility, and why it does not

The absence of microbiological capability in this market is a commercial fact with a straightforward explanation, and it is worth understanding before blaming anybody for it.

Part 5 — Analytics

Nought point nine eight of a dalton: the modification that hides in plain sight

What would be needed to catch each of these, and what it would cost.

Part 6 — The Supply Chain

What the four services actually offer, test by test

A compendial sterility test takes fourteen days of incubation and consumes the containers tested. That timescale is incompatible with the business model that made independent…

Part 7 — Explainers

Why Medutest can tell you the mass is right and not that the sequence is

The Journal’s standing position: a mass that matches is necessary evidence of identity and nowhere near sufficient.

Part 8 — Analytics

Why a 0.036-dalton difference is the hardest number in peptide identity

Calibration drift is real, unremarkable, and the reason serious laboratories run internal standards.

Part 9 — Explainers

The same signature, the same peak, three different batches

A blank certificate with the numbers left editable is an ordinary internal document. Its circulation as a finished record is the problem.