A supplier suspends shipping to Switzerland after 22 consecutive customs detentions
The route did not close because of a rule about peptides.
Stability
Page 16 of 20 of this archive, newest first.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
A supplier suspends shipping to Singapore after 24 consecutive customs detentions
The route did not close because of a rule about peptides.
The intramuscular injection nobody intended
The insulin injection-technique literature is large, well conducted and directly transferable on questions of depth and tissue. We say where it stops transferring.
The convention nobody explains before handing over the vial
Dead space in the needle hub is a real and calculable loss, and it matters more at small volumes than anybody expects.
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.
A supplier suspends shipping to Australia after 24 consecutive customs detentions
The route did not close because of a rule about peptides.
What a batch number is supposed to mean
The interval between manufacture and analysis is the most under-read figure on the page, and the one most likely to matter by the time a vial is opened.
Reading a barrel in the wrong increments
We have catalogued what readers report, ranked by the size of the dosing error each produces.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
A supplier suspends shipping to Portugal after 17 consecutive customs detentions
The route did not close because of a rule about peptides.
Reading a barrel: the graduation that is not the one you think
We work through the arithmetic in full, because it is short, and because the errors it prevents are order-of-magnitude errors.
The four testing services and the study none of them can run
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.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
The four testing services and the study none of them can run
Storage instructions in this market are close to uniform and almost never accompanied by the study that would justify them. Uniformity is a sign of convention, not of…
A supplier suspends shipping to India after 3 consecutive customs detentions
The route did not close because of a rule about peptides.
A supplier suspends shipping to Brazil after 4 consecutive customs detentions
The route did not close because of a rule about peptides.
A lyophilised peptide is not stable. It is slow.
We set out what the cycle does, in order, so that a reader can see which of its steps a rushed operation shortens first.