If you have to inject at a different time of day than usual, that is a much smaller perturbation than it feels for a weekly compound with a week-long half-life.
That is the version I would defend. It is not the version I started with.
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Practice · Administration · continued
Rotating between abdomen, thigh and upper arm: absorption differences — one year on posts 61–90
This is a continuation of a long topic, addressed by post number rather than by page. Start at post 1.
buffer_review, post #21: Worth separating two things that post #19 runs together. My understanding of Rotating between abdomen is a few years old and may have been superseded. If it has been, I would genuinely like to know rather than keep repeating it. Go to post
The number people quote for Rotating between abdomen is a central estimate presented without its interval, and the interval is wide enough that the estimate is nearly uninformative on its own.
j.vandermolen, post #7: On post #3 — agreed on the reasoning, with one qualification. If you have to inject at a different time of day than usual, that is a much smaller perturbation than it feels for a weekly compound with a week-long half-life. Go to post
I read post #59 twice before replying, because I had assumed the opposite.
Rotating between abdomen was covered in the wiki last year and the page has a review date on it, which is a better starting point than my memory of a thread.
Post #63 answers the question as asked. The question underneath it is different.
Letting a refrigerated preparation come to room temperature before injecting reduces the sting for most people. It is not a stability requirement, it is a comfort one, and the two get confused.
That distinction has done more work for me than anything else in this category.
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One caution on Rotating between abdomen: everything above assumes the underlying documentation is what it claims to be. That assumption is doing real work and is rarely stated.
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The version of Rotating between abdomen that I was taught turned out to be a teaching simplification. Useful, and not true in the way I had assumed it was.
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t.tulloch, post #15: 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. I would… Go to post
Everything in post #63 holds. The case it does not cover is the one I have.
If you have to inject at a different time of day than usual, that is a much smaller perturbation than it feels for a weekly compound with a week-long half-life.
I have no interest in any supplier named above.
Fair, and the limits you put on it are the part I will remember.
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Post #67 describes the usual case. This is about the unusual one.
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.
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k.roos, post #49: 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. Go to post
Adding the measurement that post #70 says would settle it.
On Rotating between abdomen I would separate what is worth knowing from what is worth acting on. The first list is long and the second is short, and conflating them is how threads get heated.
Post #69 describes the usual case. This is about the unusual one.
If you have to inject at a different time of day than usual, that is a much smaller perturbation than it feels for a weekly compound with a week-long half-life.
Where I would look next, rather than where I would stop.
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Checked the Rotating between abdomen claim against the primary source this morning. It survives, with a narrower scope than the version quoted here. Posting the narrower scope.
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Nothing in this subcategory is medical advice and none of it is a substitute for a demonstration from somebody qualified to give one, which most prescribers will do without being asked twice.
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That is a cleaner way of putting what I was circling around.
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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.
I would rather say I do not know than round it up to an answer.
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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.
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sa.rasmussen, post #36: If you have to inject at a different time of day than usual, that is a much smaller perturbation than it feels for a weekly compound with a week-long half-life. It is one reading of the data and not the only reasonable one. Go to post
Post #76 put the caveat in the right place and I want to underline it.
The arithmetic on Rotating between abdomen is the easy part and it is where the errors are, which is an uncomfortable combination. Show your working and someone will catch it.
Drawing up with one needle and injecting with another: a reasonable practice if you have extra needles. Fresh needle for injection reduces tissue drag and can decrease discomfort. Not necessary, but not harmful either.
The disagreement above is smaller than it looks once the terms are fixed.
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Needle length matters less than angle for subcutaneous delivery in most people. A short needle at ninety degrees and a longer one at forty-five put the material in roughly the same place.
Scoping that to what I have actually seen rather than what I have read.
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lu.cabrera, post #59: Worth stating the null on Rotating between abdomen before we explain it: the observation may be nothing. That possibility deserves a sentence and usually does not get one. Go to post
Drawing up with one needle and injecting with another: a reasonable practice if you have extra needles. Fresh needle for injection reduces tissue drag and can decrease discomfort. Not necessary, but not harmful either.
Happy to expand any of that if it is the useful part.
Post #81 put the caveat in the right place and I want to underline it.
Reporting rather than recommending, on Rotating between abdomen. What happened is above. Whether it should have is a different question and not one I am qualified to answer.
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Building on post #81 rather than restating it.
The honest answer on Rotating between abdomen is that it depends, and the useful part is the list of what it depends on. Four items, in rough order of how much they matter.
Most people get the first two right and then argue about the fourth.
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t.nardone, post #5: 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. This is the sort of thing the wiki should carry and currently does not. Go to post
If you have to inject at a different time of day than usual, that is a much smaller perturbation than it feels for a weekly compound with a week-long half-life.
I would want a second opinion before relying on that.
i.aranda_es, post #71: Adding the measurement that post #70 says would settle it. On Rotating between abdomen I would separate what is worth knowing from what is worth acting on. The first list is long and the second is short, and conflating them is how threads get heated. Go to post
Narrowing post #85, because the general version has more than one answer.
Letting a refrigerated preparation come to room temperature before injecting reduces the sting for most people. It is not a stability requirement, it is a comfort one, and the two get confused.
Post #85 and I disagree about the size of the effect, not about the direction.
Summarising the Rotating between abdomen thread so far, since it is long and the answer is buried: the first reply has the method, the fourth has the correction to it, and the rest is people agreeing at length.
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Rotating between abdomen is a question about a distribution, not about a value, and treating it as a value is what produces the confident wrong answers.
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t.tulloch, post #15: 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. I would… Go to post
I had read the opposite somewhere and cannot now find where, which tells me something.
If you have to inject at a different time of day than usual, that is a much smaller perturbation than it feels for a weekly compound with a week-long half-life.
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