fresh pin
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#injection-technique 2025-08-24
Sunday45 messages10 participantstimes are UTC
Highlights from this day
- verify_or_dont — 31G 8mm for everything. i tried the 12.7mm once and never went back 14:46
- aliquot_ada — do not aspirate for a subcutaneous injection, there is nothing to aspirate for 15:56
- two_ml_two — a proper sharps bin costs almost nothing and pharmacies will take it back absorption differences between subcutaneous sites are small for a weekly compound 16:32
- two_ml_two — right so 90 degrees works fine if you have the tissue for it. 45 if you do not 31G 8mm for everything. i tried the 12.7mm once and never went back 16:50
- mg_per_ml — slightly off topic but a fresh pin for the injection hurts less. whether thats worth the extra dead space is your call, for what its worth 20:05
do you change the pin between drawing up and injecting
a small air bubble subcutaneously is not dangerous. it costs you dose accuracy, thats the reason to clear it
i keep getting a small welt at the site, technique or reaction
let it dry
drawing up with the same pin you inject with is fine, it just dulls the tip slightly
i inject the back of my own arm and it is awkward but doable with a mirror
31G 8mm for everything. i tried the 12.7mm once and never went back
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pinch
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i changed nothing except letting the swab dry and the stinging stopped completely
is bruising more about the needle or the aftercare
absorption differences between subcutaneous sites are small for a weekly compound
update on the earlier thing does injecting a cold vial hurt more or am i imagining it
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i bled a bit, is that a needle depth thing
slightly off topic but do you count to five before withdrawing
push slow
how far from the navel is actually far enough
the difference between 29G and 31G is real but small. the difference between wet and dry alcohol is not small
genuine question pinch, 45 degrees, count to five, withdraw slowly. two years and almost no bruising
if you are getting a lot of bruising, look at how fast you are pushing before you blame the needle
do not aspirate for a subcutaneous injection, there is nothing to aspirate for
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how do you avoid hitting the same spot twice when the marks fade
45 degrees
right so welts at the site are usually a mild local reaction and rotation sorts it
coming back to this do not reuse pins. it is not about sterility so much as the tip being blunt after one pass
bleeding a little means you nicked a small vessel. it is not a technique failure
how many sites are in your rotation
do you pinch or stretch
a proper sharps bin costs almost nothing and pharmacies will take it back
absorption differences between subcutaneous sites are small for a weekly compound
coming back to this i mark the rotation in a notes app because the marks fade and i lost track twice
update from 23 months ago: switched to a fixed rotation and the site reactions stopped
i keep the sharps bin next to the fridge so the whole thing happens in one place, someone check my working
right so 90 degrees works fine if you have the tissue for it. 45 if you do not
31G 8mm for everything. i tried the 12.7mm once and never went back
warming the vial in your hand for a minute is the cheapest comfort improvement there is
never recap a used pin. that is how people stick themselves
do you use the insulin syringe for both drawing and injecting
push slowly. fast is what causes the ache afterwards
nobody here should be telling you where to inject. we can tell you what we do
45 degrees
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slightly off topic but a fresh pin for the injection hurts less. whether thats worth the extra dead space is your call, for what its worth
cold from the fridge genuinely stings more. i let it sit out for ten minutes
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sharps bin
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mark it down
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thats normal
warm it first