Topic summary

Angle of injection and whether 90 degrees is always right

Practice › Administration aseptic technique missed dose injection site reaction

This is a generated summary. It shows the 9 most-liked posts from a topic of 117, 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.

d.barrosTL2 Moderator21 Jul 2025 · edited#3

c.castellanos, post #2: Coming back to the opening post, because the follow-up matters more than the original answer. 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. Go to post

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 a few months.

26 likes in reply to #2 12mo

n.haddadTL2 Moderator11 Oct 2025#34

post #33 answers the question as asked. The question underneath it is different.

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 10mo

m.balogunTL2 Moderator14 Nov 2025#50

e.roos, post #10: 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

Pinch or no pinch: the decision depends on needle length and on your own anatomy. A longer needle (8 mm and up) reaches subcutaneous tissue easily without a pinch. A shorter needle (4-6 mm) is safer with a gentle pinch. The pinch size matters less than people think; the injection angle matters more.

29 likes in reply to #10 8mo

g.valckenaereTL3Regular17 Dec 2025#67

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.

31 likes 7mo

FFaulknerTL3Regular5 Jan 2026#77

On post #73 — agreed on the reasoning, with one qualification.

A site rotation scheme that actually works: abdomen, outer thigh, back of arm, outer hip. Rotate through them in order, move a minimum 2 cm between consecutive sites, note the site with each dose. If a local reaction appears you have the history. If you rotate properly you will not get lipohypertrophy from overuse of one area.

29 likes 7mo

microgramsTL2Regular17 Jan 2026#84

Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather than quietly editing.

The correction was fair and I had been repeating something I had not checked carefully enough.

29 likes 6mo

a.kwiatkowskiTL2Member7 Feb 2026#96

27 likes 6mo

b.wikstromTL2 Moderator3 Mar 2026#110

m.balogun, post #50: Pinch or no pinch: the decision depends on needle length and on your own anatomy. A longer needle (8 mm and up) reaches subcutaneous tissue easily without a pinch. A shorter needle (4-6 mm) is safer with a gentle pinch. The pinch size matters less than people think; the injection angle matters more. Go to post

32 likes in reply to #50 5mo

q.zhao_qaTL3Quality assurance7 Mar 2026#112

Worth separating two things that post #108 runs together.

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 moving average.

28 likes 5mo

Read the full topic (117 posts)

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