A site rotation scheme that is easy enough to actually follow — a second dataset

A site rotation scheme that is easy enough to actually follow — a second dataset Writing it up because I had to work it out twice and would rather nobody else did.

Two things I would like separated before anyone answers on site rotation scheme, because they get bundled and then argued about as one thing.

The first is descriptive: what has actually been observed, by whom, and how. The second is causal: why. I am asking about the first only.

A new needle for each injection is not fussiness. A needle blunts on first use and a blunted needle is the reason the second injection hurts more than the first.

Anyone who has looked at this more carefully, please correct the record.

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

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.

Picking up the opening post: that is the part I would want checked first.

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.

I had written a reply contradicting the opening post and deleted it. Here is what survived.

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.

This is the sort of exchange that makes the archive worth searching.

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.

That has held every time I have looked, which is not the same as always.

Adding the measurement that post #5 says would settle it.

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.

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.

I looked this up rather than remembered it, which is the right order.

Post #9 is the version of this I will quote in future. One addition.

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.

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.

The general answer and the answer for your case may diverge here.