Topic summary

Rotating between abdomen, thigh and upper arm: absorption differences — one year on

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

This is a generated summary. It shows the 9 most-liked posts from a topic of 103, 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.

BBramleyTL3Regular24 Dec 2025#3

Worth separating two things that the opening post runs together.

Two things before anyone answers the substance.

First, the context in the first post is clear and specific. Second, the question is framed so that an answer can actually address it. Both are the norm here and both matter more than they sound.

25 likes 7mo

c.serranoTL2 Moderator5 Feb 2026#17

t.tulloch, post #2: Bleeding at the injection site: normal and usually minimal. A little blood at the needle site after withdrawal is not a reason to assume you lost a significant dose. The needle passed through tissue and there is a small amount of bleeding in the tract. Go to post

For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add the caveats that make it safe to use.

27 likes in reply to #2 6mo

p.lindqvistTL2 Moderator4 Mar 2026#28

Cold solution and stinging: warming the vial in your hands for a minute before injection reduces the stinging sensation substantially. This is the simplest thing to try if injections are uncomfortable.

31 likes 5mo

figure_reviewTL2Member11 Mar 2026#31

Bleeding at the injection site: normal and usually minimal. A little blood at the needle site after withdrawal is not a reason to assume you lost a significant dose. The needle passed through tissue and there is a small amount of bleeding in the tract.

32 likes in reply to #2 5mo

k.roosTL2 Moderator18 Apr 2026#49

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.

26 likes 3mo

integrator_draftTL3Regular28 Apr 2026#54

Angle of injection: 90 degrees into pinched tissue ensures subcutaneous placement. It is not always necessary and shallower angles can work, but 90 degrees into a small pinch is the safest technique to learn first.

26 likes 3mo

ak.kravchenkoTL2 Moderator14 May 2026#62

buffer_review, post #21: I read post #19 twice before replying, because I had assumed the opposite. Injecting into an area that has become firm: lipohypertrophy — thickened fatty tissue from repeated injection in one area — changes local tissue absorption. Avoid injecting into areas that are noticeably firm or lumpy and allow those areas to recover for at least… Go to post

32 likes in reply to #21 2mo

k.marchandTL2 Moderator7 Jul 2026#91

Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the kind that comes from remembering a figure instead of looking it up.

29 likes 21d

vial_slopeTL3Regular26 Jul 2026#102

j.vandermolen, post #7: On post #3 — agreed on the reasoning, with one qualification. A genuinely late dose: the labelling generally says that if the next dose is more than a couple of days away, take it as soon as you notice. If the next dose is close, skip it and resume the schedule. The reasoning follows from the long half-life; you are perturbing a slowly… Go to post

27 likes in reply to #7 2d

Read the full topic (103 posts)

Suggested topics

Topic	Participants	Replies	Views	Activity
Rotating between abdomen, thigh and upper arm: absorption differences Practice › Administration injection site reaction needle gauge & length missed dose aseptic technique On the subject in the title: Rotating between abdomen, thigh and upper arm: absorption differences Working notes rather than a conclusion. Reporting something rather than asking about it, in case the pattern…		2	3.5k	5mo
Pinch or no pinch, and how needle length changes the answer — the long version Practice › Administration injection site rotation injection site reaction missed dose aseptic technique On the subject in the title: Pinch or no pinch, and how needle length changes the answer — the long version Working notes rather than a conclusion. I have read the maintained page on this and I still have a…	+75	79	1.5k	1mo
Injection discomfort: needle gauge, volume, temperature, technique — one year on Practice › Administration missed dose aseptic technique injection site rotation needle gauge & length Posting this under the heading it deserves: Injection discomfort: needle gauge, volume, temperature, technique — one year on Everything below is what sits behind that. Practical question with the units…		2	102	9mo
Injection discomfort: needle gauge, volume, temperature, technique Practice › Administration subcutaneous injection injection site reaction needle gauge & length aseptic technique Injection discomfort: needle gauge, volume, temperature, technique — setting out what I have, and where I think it stops being reliable. Practical question with the units stated, because I have seen how…	+66	71	14k	2mo
A genuinely late dose: what the labelling says and what people do — what changed since Practice › Administration subcutaneous injection missed dose needle gauge & length injection site rotation Solved A genuinely late dose: what the labelling says and what people do — what changed since — setting out what I have, and where I think it stops being reliable. I have read the maintained page on this and I still…	+9	13	474	6mo

Related topics — sharing the tags injection site reaction, needle gauge & length, aseptic technique

Topic	Participants	Replies	Views	Activity
A site rotation scheme that is easy enough to actually follow Practice › Administration needle gauge & length missed dose injection site rotation aseptic technique On the subject in the title: A site rotation scheme that is easy enough to actually follow Working notes rather than a conclusion. Practical question with the units stated, because I have seen how quickly…	+112	125	5.8k	21h
Priming a pen and whether the primed volume is wasted Devices › Pens & autoinjectors storage missed dose dead volume Solved Wiki Priming a pen and whether the primed volume is wasted Writing it up because I had to work it out twice and would rather nobody else did. Practical question with the units stated, because I have seen how…	+19	23	1.3k	2d
Albumin binding and how it produces a long half-life Pharmacology › Pharmacokinetics semaglutide liraglutide worked example tirzepatide Albumin binding and how it produces a long half-life — setting out what I have, and where I think it stops being reliable. I would like to understand what this number means before I repeat it anywhere. A…	+38	44	6.6k	14mo
Coming back to: Time to steady state after a dose increase Pharmacology › Pharmacokinetics semaglutide missed dose liraglutide worked example Time to steady state after a dose increase Writing it up because I had to work it out twice and would rather nobody else did. Posting the method first, because I know what the first three replies will…	+104	110	16k	2d
When a dose reduction is the correct response to a side effect Practice › Dosing & titration dose reduction tirzepatide titration missed dose Solved When a dose reduction is the correct response to a side effect — that is the question, and I have not found it answered plainly anywhere I have looked. A question about technique rather than about dose. I…	+38	42	2.7k	19h