In-use periods, and the ones nobody can give you
A needle blunts on first use. Reuse is uncomfortable, and it is a documented contributor to lipohypertrophy.
Syringes & units
Insulin syringe graduations, the 100-unit convention, and the arithmetic that goes wrong.
Aseptic technique for people who were never taught it
A needle blunts on first use. Reuse is uncomfortable, and it is a documented contributor to lipohypertrophy.
An error taxonomy for a market without a pharmacist
The recurring errors in this market are not exotic. They are a small set of arithmetic and reading failures, each capable of moving a dose by a factor of two or ten.
Choosing a needle for a subcutaneous peptide
Skin thickness at the standard injection sites is approximately two millimetres in adults and varies remarkably little with body mass. That single finding is why short…
Aseptic technique for people who were never taught it
A needle blunts on first use. Reuse is uncomfortable, and it is a documented contributor to lipohypertrophy.
Lipohypertrophy, and the absorption it ruins
Repeated injection into the same small area produces lipohypertrophy — thickened, rubbery subcutaneous tissue with blunted and erratic absorption. It is common, it is…
Aseptic technique for people who were never taught it
For licensed products the in-use period is established by stability data. For a peptide reconstituted at home there is no such data, and the honest answer is that nobody…
Storage after reconstitution, and the evidence behind the numbers
Sharps disposal is a legal obligation in most jurisdictions and a safety obligation everywhere. Household waste is not a route.
A unit is not a dose, and it never was
Insulin syringes are graduated in units on a convention that fixes 100 units to one millilitre. That convention says nothing about how much peptide is in a unit, and…
Storage after reconstitution, and the evidence behind the numbers
The air shot before a pen injection removes air from the cartridge and confirms flow. Skipping it can mean a materially reduced dose, and it is skipped constantly.
A calculation you should do twice and write down once
Every time a vial changes, the conversion must be recalculated. Carrying forward a unit count from the last vial is the single most reliable way to give the wrong dose.
Mapping a rotation that you will actually follow
The evidence base here is the insulin injection-technique literature, which is large and transfers well on tissue questions.
In-use periods, and the ones nobody can give you
A needle blunts on first use. Reuse is uncomfortable, and it is a documented contributor to lipohypertrophy.
How a correct calculation becomes a wrong dose
A pharmacist catches most of these in licensed practice. In this market there is no pharmacist, so the checks have to be structural.
Choosing a needle for a subcutaneous peptide
A 4 mm needle at ninety degrees without a skin pinch is adequate for essentially all adults. The persistence of 12.7 mm needles in this market is habit, not reasoning.
Storage after reconstitution, and the evidence behind the numbers
The air shot before a pen injection removes air from the cartridge and confirms flow. Skipping it can mean a materially reduced dose, and it is skipped constantly.
The intramuscular injection nobody intended
Skin thickness at the standard injection sites is approximately two millimetres in adults and varies remarkably little with body mass. That single finding is why short…
A unit is not a dose, and it never was
Dead space in the needle hub is a real and calculable loss, and it matters more at small volumes than anybody expects.
Priming a pen is not optional
Aseptic technique here is four steps and none of them are difficult. They are, however, routinely compressed to two.
Four millimetres is enough, and the data says so
The insulin injection-technique literature is large, well conducted and directly transferable on questions of depth and tissue. We say where it stops transferring.