This is a continuation of a long topic, addressed by post number rather than by page. Start at post 1.
Where I part company with post #87, and it is a narrow parting.
Alcohol swabbing and letting the site dry is the whole of the preparation for a subcutaneous injection into intact skin. Injecting before it dries is what stings.
If that reads as pedantic, it is, and it has saved me twice.
Post #91 is the version of this I will quote in future. One addition.
The bit of site rotation scheme that nobody enjoys is that the answer changes depending on what you are trying to decide with it. Say what the decision is and the thread will converge.
Grateful for the specificity. Vague answers to this question are what sent me looking.
Post #91 put the caveat in the right place and I want to underline it.
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 has been true for the cases I have seen and I have not seen many.
Site reactions that appear immediately and settle within a day are described commonly here. Ones that appear a day later and spread are a different observation and worth describing to a clinician rather than a forum.
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 have changed my mind on this once already, so take it as current rather than settled.
Useful. I had the fact and not the reason, which turns out to be the important half.
Everything in post #99 holds. The case it does not cover is the one I have.
Since site rotation scheme keeps coming up, it should probably be a maintained page rather than a recurring thread. I am happy to draft it if someone with more direct experience will review it.
Note the site alongside the dose. If a local reaction appears three weeks later you will want to know where the previous four injections went.
The answer changed when I changed how I was measuring, which was informative.
Checked the site rotation scheme claim against the primary source this morning. It survives, with a narrower scope than the version quoted here. Posting the narrower scope.
Sensible. I would want the same detail before I acted on it either.
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.
That holds for the case as described. Change the assumptions and it may not.
Taking post #105 at face value and following it one step further.
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.
I would be interested in a counterexample if anyone has one.
Rotate on a fixed sequence rather than choosing each week. A sequence you follow beats a scheme you improvise, and it produces a record you can read back.
Take it as a starting point and not as a specification.
The useful distinction on site rotation scheme 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.
Coming back to post #108, because the follow-up matters more than the original answer.
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 matches what I was told, which is not the same as knowing it.
Two claims get bundled together under site rotation scheme and they need separating. The descriptive one — this is what was observed — is usually well supported. The causal one — this is why — usually is not.
Almost every disagreement in threads like this one dissolves once you say which of the two you are making.
A request rather than an answer: could whoever has the primary source for site rotation scheme post it? I have seen the claim three times this month and each version had lost a qualifier.
Leak-back after withdrawal: a small amount of liquid on the skin after withdrawal is ordinary. Whether you lost a "meaningful" dose depends on concentration and your target dose, but some leak-back is universal and does not need to be treated as an error.
This follows post #114 rather than contradicting it.
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.
Worth separating two things that post #116 runs together.
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.
Speaking for myself and not for anyone else who has posted here.
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 would rather be precise about what I do not know than vague about what I do.