Who chose the vial that was tested?
The condition on arrival is recorded by some services and not others, and it is one of the more informative lines in a report.
Certificates of analysis
Page 50 of 51 of this archive, newest first.
SSA declines, for the 24th 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 liraglutide lot at 97.8%, against 94.8% on the certificate
The report states the gradient, the wavelength and the integration threshold, which is more than most.
The impurity hiding underneath the parent peak
An orthogonal method separates on a different physical principle, so that species co-eluting in the first are likely to resolve in the second. Two runs of the same method at…
Six words a verification badge would need to mean anything
Lot-level verification with a public report is a real and achievable thing. It exists in this market, on a minority of listings.
The badge is about a sample. The listing is about a product.
The Journal does not treat a badge as evidence and states so wherever it reports one.
What changed at QST 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.
Denmark health authority warns on falsified semaglutide pens
Reported from the analysis, not from a warning notice.
What changed at WWB 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.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
A named analyst is the cheapest quality signal in this trade
What the Journal asks when a document arrives unsigned, and what the answers have been.
Retest date, expiry date, and the two conventions being confused
A document is only as good as the chain that connects it to the material, and most chains here are two or three links longer than the paperwork admits.
Deamidation, oxidation, and the two shifts worth memorising
What would be needed to catch each of these, and what it would cost.
A percentage is not a specification
Chromatographic purity is cheap, fast and comparable-looking. Those three properties, and not its usefulness, explain why it became the industry’s single figure of merit.
The submitted sample: the weakest link in the whole system
Every third-party report in this market describes a sample somebody chose to send. That choice is outside the laboratory’s control and outside its records.
Denmark health authority warns on falsified semaglutide pens
Reported from the analysis, not from a warning notice.
What “LC-MS: conforms” tells a reader, which is almost nothing
A short audit procedure, usable by anyone holding a certificate and a calculator.
What twenty companies say about storage, and what they have measured
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.
PeptideMeter result on a Guangzhou semaglutide lot lands 1.0 points below the supplier’s figure
The Journal submitted the sample and paid for the analysis. The vendor was told in advance.
QYB declines, for the 13th time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.