A ten-fold dose error caught before injection posts 31–60

I had read the opposite somewhere and cannot now find where, which tells me something.

The documentation on ten-fold dose error caught is better than this thread and I say that as someone who has posted in the thread.

Insulin syringe graduations: U-100 syringes are marked in units where 100 units = 1 mL. Always confirm your syringe is U-100. Confusion between insulin units and milligrams is the most common syringe error.

Post #46 is right about the mechanism and I think understates the practical bit.

U-100 means the barrel is graduated for a solution containing one hundred units of insulin per millilitre. For anything that is not insulin, the units are simply hundredths of a millilitre.

Answering the question post #46 raises rather than the one it answers.

Aspirating before injection: for subcutaneous injection, aspirating (pulling back on the plunger to check for blood) is not necessary and is sometimes discouraged because it is associated with more discomfort. Subcutaneous injection without aspiration is standard practice.

Two sources, same conclusion, and I could not rule out that one copied the other.

The arithmetic in post #49 is right; the assumption feeding it is the part to check.

A detachable luer needle plus hub can retain enough volume to matter. Whether it matters to you depends on your dose, and the arithmetic is worth doing once.

I would hold that lightly until someone with a larger sample weighs in.

Second-hand on ten-fold dose error caught, so weight it accordingly — someone whose method I trust told me this and I have not verified it myself.

Silicone coating on the barrel affects how smoothly the plunger moves and how a very slow injection feels. It is one reason two syringes at the same specification are not identical to use.

That distinction has done more work for me than anything else in this category.

If you are new and reading this thread for the answer to ten-fold dose error caught: the answer is conditional, the conditions are in the third reply, and the rest of the thread is worth skipping.

Where I part company with post #50, and it is a narrow parting.

Offering a way to settle ten-fold dose error caught rather than another opinion about it. Two measurements, taken the same way, a fortnight apart. If the difference is within the noise, the question was not answerable at this precision.

Reading rather than answering, but this is the post I would point somebody at.

Drawing air into the vial before withdrawing liquid equalises the pressure and makes the draw easier. It is not required and it is why some people find a full vial harder to draw from than a half-empty one.

The strength of my opinion here exceeds the strength of my evidence.

Confirming post #56 from a second method, which matters more than confirming it from a second person.

Worth stating the null on ten-fold dose error caught before we explain it: the observation may be nothing. That possibility deserves a sentence and usually does not get one.

I had written a reply contradicting post #54 and deleted it. Here is what survived.

My position on ten-fold dose error caught is current rather than settled. I have revised it once already and I expect to again, so treat it accordingly.

Post #56 answers the question as asked. The question underneath it is different.

Syringe barrel size: common sizes are 0.3 mL, 0.5 mL, and 1.0 mL. Smaller barrels are more legible for small doses. Larger barrels hold larger volumes. Choose based on your dose.

Genuinely open to being wrong about this one.

I read post #58 twice before replying, because I had assumed the opposite.

A note on how ten-fold dose error caught gets discussed rather than on ten-fold dose error caught itself: the confident posts get the replies and the careful ones get ignored, and the careful ones have been right more often.