Injecting into the same spot repeatedly
Using the same small area week after week is one of the most common mistakes, and one of the easiest to fix with a written rotation record rather than relying on memory.
The fix
A simple rotation chart or log entry noting the site and zone used each week removes the guesswork.
Not removing air bubbles
Air bubbles in the syringe barrel take up space that looks like liquid but isn’t, which can lead to drawing slightly less than intended. Tapping the syringe gently and expelling any visible air before injecting is a quick habit that avoids this.
Injecting through cold skin
Injecting immediately after taking a vial out of the fridge can sting more than injecting at a slightly warmer temperature. Letting the vial sit at room temperature for a short while before drawing a dose is a common, simple adjustment.
The fix
A few minutes out of the fridge, not left out for hours, is usually enough to take the edge off without meaningfully affecting storage.
Rushing the injection
Injecting too quickly can increase discomfort and, in some cases, cause more of the solution to leak back out along the needle track. A slow, steady push, followed by holding the needle in place for a few seconds before withdrawing, is generally recommended technique.
Not logging it
Skipping the log entry “just this once” is how gaps start. A consistent, low-effort habit (date, site, dose) beats an occasional detailed one.