Independent analysis puts a SWB tirzepatide lot at 95.6%, against 93.1% on the certificate
The result is unremarkable. What the report omits is not.
Orla McCaffrey
Page 3 of 6 of this archive, newest first.
Archive — page 3
107 piecesWho signed this, and what did they undertake by signing it
A manufacturer’s certificate is a self-declaration. An accredited laboratory’s report is a third-party measurement. The trade prints both under one heading.
A document, not a test: what a certificate actually is
Nothing on this page is difficult. It is simply unfamiliar, and unfamiliarity is what makes a weak certificate look like a strong one.
The fourteen-day problem, and what it does to a commercial testing model
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.
Who signed this, and what did they undertake by signing it
Two signatures — one who performed the work, one who approved its release — are the ordinary regulated convention and are almost unknown here.
Six words a verification badge would need to mean anything
What a verification mark would have to carry to be checkable: a date, a lot, a method, a submitter and a link to the report.
Reading a certificate as a document rather than as a score
The header identifies the batch, the table records the tests, and the footer says who is answerable. Two of the three are usually incomplete.
What we asked twenty suppliers about stability data
A retest date says that material should be re-examined before use. An expiry date says it should not be used. The trade uses the second word for the first concept.
What we asked twenty suppliers about stability data
A retest date says that material should be re-examined before use. An expiry date says it should not be used. The trade uses the second word for the first concept.
Check the vial, not the box
What happens to traceability when bulk material is subdivided, repackaged and relabelled two or three times before sale.
Nought point nine eight of a dalton: the modification that hides in plain sight
Stereochemical inversion changes the molecule, changes its biology, and changes its mass by exactly nothing.
Janoshik result on a Nantong retatrutide lot lands 1.4 points below the supplier’s figure
The result is unremarkable. What the report omits is not.
A document, not a test: what a certificate actually is
The header identifies the batch, the table records the tests, and the footer says who is answerable. Two of the three are usually incomplete.
Twenty-eight days is a number from somebody else’s product
We set out what is known, what is inferred and what is simply assumed about the fortnight after a vial is opened.
The header, the table and the signature block
The header identifies the batch, the table records the tests, and the footer says who is answerable. Two of the three are usually incomplete.
A named analyst is the cheapest quality signal in this trade
Two signatures — one who performed the work, one who approved its release — are the ordinary regulated convention and are almost unknown here.
A spectrum is a photograph of an ion, not of a molecule
A brief and unromantic tour of the interface between a liquid sample and a vacuum.
VendorInvestigate result on a Hong Kong retatrutide lot lands 2.9 points below the supplier’s figure
A reminder that a purity figure is the output of a method, and that methods differ.
The change that weighs nothing at all
What would be needed to catch each of these, and what it would cost.
The anatomy of the most reproduced page in this trade
The header identifies the batch, the table records the tests, and the footer says who is answerable. Two of the three are usually incomplete.