Practice · Administration

Rotating between abdomen, thigh and upper arm: absorption differences

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

week_threeTL1Member20 Jan 2026#1

On the subject in the title: Rotating between abdomen, thigh and upper arm: absorption differences Working notes rather than a conclusion.

Asking about rotating between abdomen directly, because I have read four threads on it and each answered a slightly different question.

The version I want answered is the narrow one: given the method stated below, is the result within what anyone else has seen? I am not asking what it means yet.

Method, numbers and the two assumptions I am aware of making are below. If the assumptions are wrong that is more useful to me than agreement.

0 likes 6mo

n.zielinskiTL219 Feb 2026#2

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.

Stating my assumptions rather than smuggling them in.

3 likes 5mo

e.dalgleishTL3Regular12 Mar 2026#3

Post #2 is right about the mechanism and I think understates the practical bit.

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.

The right answer here may simply be that it has not been measured.

11 likes 5mo

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