Thread · #injection-technique · 2026-04-10

i keep getting a small welt at the site

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queue_position — i keep getting a small welt at the site, technique or reaction 15:32

thigh or abdomen, does absorption actually differ

do not reuse pins. it is not about sterility so much as the tip being blunt after one pass

i mark the rotation in a notes app because the marks fade and i lost track twice

bleeding a little means you nicked a small vessel. it is not a technique failure

i inject the back of my own arm and it is awkward but doable with a mirror

do you change the pin between drawing up and injecting

update from 3 months ago: switched to a fixed rotation and the site reactions stopped

is a small air bubble in the barrel a problem subcutaneously

a fresh pin for the injection hurts less. whether thats worth the extra dead space is your call

technique probably

i changed nothing except letting the swab dry and the stinging stopped completely