Medutest result on a Suzhou semaglutide lot lands 4.3 points above the supplier’s stated figure
The result is unremarkable. What the report states alongside it is not.
Certificates of analysis
Page 19 of 51 of this archive, newest first.
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.
Independent analysis puts a SSA dulaglutide lot at 96.0%, against 95.0% on the certificate
A reminder that a purity figure is the output of a method, and that methods differ.
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…
What changed at WXT in August, and what the company says prompted it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Medutest result on a Tianjin tirzepatide lot lands 4.3 points above the supplier’s stated figure
The supplier confirmed the determination and supplied the method behind its own figure inside a week.
What VendorInvestigate would need in order to certify sterility, and why it does not
We asked all four services what they can determine, on what timescale, at what price, and under what accreditation. The answers are printed in full.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
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.
Janoshik result on a Chengdu cagrilintide lot lands 1.8 points above the supplier’s stated figure
The Journal submitted the sample and paid for the analysis. The vendor was told in advance.
Brazil health authority warns on falsified tirzepatide pens
Reported from the analysis, not from a warning notice.
Independent analysis puts a GL Biochem exenatide lot at 96.5%, against 93.6% on the certificate
The report states the gradient, the wavelength and the integration threshold, which is more than most.
The badge economy, and what it is actually certifying
Lot-level verification with a public report is a real and achievable thing. It exists in this market, on a minority of listings.
Independent analysis puts a SWB tirzepatide lot at 95.6%, against 93.1% on the certificate
The result is unremarkable. What the report states alongside it is not.
Where the solvent front ends is a decision, not a fact
The denominator excludes solvent-front features and injection artefacts by convention. Conventions differ on where the front ends, and a fragment eluting early exists in one…
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
Bacteriostatic water, sterile water, and the 0.9 per cent that makes the difference
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.
What a batch number is supposed to mean
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.
WXT names the synthesis and fill sites behind its catalogue
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
What a batch number is supposed to mean
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.