Topic summary

Injection discomfort: needle gauge, volume, temperature, technique

Practice › Administration subcutaneous injection injection site reaction needle gauge & length aseptic technique missed dose

This is a generated summary. It shows the 9 most-liked posts from a topic of 72, in their original order, with the accepted answer included where one exists. It is a reading aid and it will miss nuance — the full topic is the record.

ambient_reviewTL3Regular9 Dec 2025#4

c.vermeulen, post #1: Injection discomfort: needle gauge, volume, temperature, technique — setting out what I have, and where I think it stops being reliable. Injection discomfort: setting out the arithmetic in full, because I have had to do it twice and I would rather nobody else did. Every step is shown. If the answer is wrong the error will be visible,… Go to post

Leaving the needle in for a couple of seconds after depressing the plunger reduces leakage at the site. It costs nothing and it is the fix for the "some came back out" question.

Happy to be corrected if someone holds better data than mine.

30 likes in reply to #1 8mo

a.amankwahTL29 Feb 2026#24

k.farrugia, post #21: Bleeding at the site is common and unremarkable at these needle gauges. Persistent bruising in the same area repeatedly is worth a change of technique or of site rather than of compound. I have seen it go both ways, which is why I hedge. Go to post

A new needle for each injection is not fussiness. A needle blunts on first use and a blunted needle is the reason the second injection hurts more than the first.

Anyone with a larger sample, please post it.

31 likes in reply to #21 6mo

sterile_tableTL3Regular21 Feb 2026#29

Quietly grateful for the plain phrasing. Not every thread gets that.

30 likes 5mo

a.finnegan_rdTL2Dietitian8 Mar 2026#35

TL4_Halvorsen, post #20: Pinching a fold is useful for lean tissue and unnecessary elsewhere. The point is to keep the needle out of muscle, and whether you need to depends on the site and on you. I am confident about the direction and much less about the magnitude. Go to post

Taking post #34 at face value and following it one step further.

I would call the community position on injection discomfort likely rather than established, and I would be comfortable defending that hedge.

31 likes in reply to #20 5mo

j.castellanosTL231 Mar 2026#45

g.bakken, post #30: Subcutaneous injection into abdominal tissue, thigh or upper arm is what the licensed labelling in this class describes, and the published comparisons found the differences in exposure between those sites small. Go to post

I read post #41 twice before replying, because I had assumed the opposite.

Bleeding at the site is common and unremarkable at these needle gauges. Persistent bruising in the same area repeatedly is worth a change of technique or of site rather than of compound.

If anyone has run this properly I would rather read that than my own guess.

25 likes in reply to #30 4mo

f.laurentTL21 May 2026#59

coldchain_liu, post #37: Bookmarking this. I will come back when I have something worth adding. Go to post

Post #56 is right about the mechanism and I think understates the practical bit.

The useful distinction on injection discomfort is between what was measured and what was inferred from it. Both end up in the same sentence and only one of them has error bars.

27 likes in reply to #37 3mo

n.kuuselaTL211 May 2026#64

Air in the syringe is a much smaller problem subcutaneously than the anxiety about it suggests, and it is still worth expelling because the bubble occupies volume you meant to be liquid.

The conclusion is tentative; the arithmetic underneath it is not.

33 likes 3mo

y.mensahTL3Wiki editor22 May 2026#69

Air bubbles in a subcutaneous injection: the honest risk assessment is low. Tiny air bubbles in subcutaneous tissue do not behave like an air embolism in a blood vessel. A few air bubbles are not a reason to restart the entire injection.

This has been discussed before and I could not find the thread, so, again.

32 likes 2mo

ka.haddadTL226 May 2026#71

Injection discomfort has been discussed here with more heat than it deserves, mostly because two definitions have been in play the whole time.

25 likes 2mo

Read the full topic (72 posts)

This topic was referenced in

A site rotation scheme that is easy enough to actually followPractice › Administration · 125 replies
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