Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
Purity
Page 33 of 51 of this archive, newest first.
What changed at CPC in December, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
What changed at QYB in December, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Benzyl alcohol is a preservative, not a sterilising agent
At low concentrations a measurable fraction of peptide can adsorb to glass and plastic surfaces, and the loss is largest exactly where it is least expected.
Why TFC can be entirely straightforward and still tell you nothing about bioburden
The Journal has read several hundred certificates from twenty companies. We set out what the documents actually cover, and what a reader is filling in from imagination.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
Germany health authority warns on falsified dulaglutide pens
Reported from the analysis, not from a warning notice.
LAL, kinetic chromogenic, recombinant factor C: three ways to the same figure
The limit for a parenteral product is calculable from the dose and the body weight in two lines. Almost nobody in this trade performs the calculation.
Janoshik result on a Xianning semaglutide lot lands 4.3 points below the supplier’s figure
The supplier has not disputed the finding. It has not explained the gap either.
FGP declines, for the 4th time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
What changed at WXT in November, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
What happens in solution that does not happen in the cake
Every degradation pathway accelerates by orders of magnitude on reconstitution, because the solvent that lyophilisation removed is the reagent most of them need.
Singapore health authority warns on falsified liraglutide pens
Reported from the analysis, not from a warning notice.
What a split-sample exercise can establish, and what it cannot
Two years ago we ran an anonymised version of this comparison and promised a named one. This is it, with every method printed in full.
QYB declines, for the 4th time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Independent analysis puts a BCH mazdutide lot at 95.5%, against 94.0% on the certificate
The report states the gradient, the wavelength and the integration threshold, which is more than most.
What twenty companies say about storage, and what they have measured
What would make a difference is not a regulator. It is three lines on a certificate, all of which are already known to whoever wrote it.
SWB declines, for the 21st time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Independent analysis puts a TFC semaglutide lot at 99.0%, against 96.3% on the certificate
The result is unremarkable. What the report omits is not.
The question no chromatogram has ever answered
Purity, content, identity, sterility and endotoxin are five separate determinations. A single sheet of paper carrying one of them is not evidence about the other four.