New Zealand health authority warns on falsified tirzepatide pens
Reported from the analysis, not from a warning notice.
Certificates of analysis
Page 51 of 51 of this archive, newest first.
VendorInvestigate result on a Xi'an retatrutide lot lands 1.1 points below the supplier’s figure
The supplier has not disputed the finding. It has not explained the gap either.
What changed at WXT in January, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Low endotoxin recovery: the interference nobody looks for
We submitted vials for endotoxin determination and report the results, the method and the laboratory, because a pyrogen figure without a method is as empty as a purity…
Independent analysis puts a BCH cagrilintide lot at 96.6%, against 93.4% on the certificate
The result is unremarkable. What the report omits is not.
CPC declines, for the 14th time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Two documents, two disciplines: purity and sterility are not the same trade
Every certificate circulating in this market answers a question about molecules. Almost none answers a question about organisms, pyrogens, or the integrity of the seal.
What the paperwork is for, and who it was designed to protect
The header identifies the batch, the table records the tests, and the footer says who is answerable. Two of the three are usually incomplete.
From vial to bench: what is recorded and what is assumed
Chain of custody, in a regulated setting, begins at sampling. Here it begins when the package arrives.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
Spain health authority warns on falsified liraglutide pens
Reported from the analysis, not from a warning notice.
Why a 0.036-dalton difference is the hardest number in peptide identity
Parts per million sound impressive until they are converted into daltons at the molecular weight of the thing being measured.
What changed at Homopeptide in January, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
A tested vial is evidence about a vial
A result on one vial generalises to a batch only if the vial was drawn in a way that makes it representative — and nobody records how it was drawn.
VendorInvestigate result on a Hong Kong dulaglutide lot lands 2.0 points below the supplier’s figure
A reminder that a purity figure is the output of a method, and that methods differ.
What changed at WXT in January, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.