A ten-fold dose error caught before injection — setting out what I have, and where I think it stops being reliable.
Trying to work out what would count as evidence on ten-fold dose error caught, before collecting any. This is the part I usually skip and it is the part that makes the rest useful.
If two explanations predict the same observation, observing it does not help. So: what observation would separate them?
Seconded. It reads as careful rather than confident, which is the right register.
Post #3 is right about the mechanism and I think understates the practical bit.
Sharps containers are a legal requirement for disposal in several jurisdictions and a sensible precaution everywhere. A rigid sealed container is the minimum.
That is my reading. Someone else read the same page differently and was reasonable.
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.
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.
Post #6 answers the question as asked. The question underneath it is different.
Needle length for subcutaneous delivery is a question about tissue depth and injection angle together. Short needles at ninety degrees and longer ones at an angle reach comparable depths.
I am describing what is, rather than arguing for what should be.
Graduation spacing is worth checking before you buy rather than after. Some 1 mL barrels are marked every two units and some every one, and that changes what doses you can read.
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.
Speaking for myself and not for anyone else who has posted here.
Nothing to add, except that this is the answer I would give if asked.
Bookmarking this. I will come back when I have something worth adding.
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.
A weak preference rather than a position.
Reading this ten-fold dose error caught thread as someone who came in with a fixed view: the third and seventh replies moved me and the confident ones did not.
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.
I read post #19 twice before replying, because I had assumed the opposite.
A note on scope: what I am saying about ten-fold dose error caught applies to the case in the first post and I would not extend it further without checking.
This follows post #19 rather than contradicting it.
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.
Good question, well framed, and I would like to see it answered properly.
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 literature is thinner on this than the confidence in the thread implies.
Distinguishing three things in the ten-fold dose error caught discussion that keep getting used interchangeably: the observation, the proposed mechanism, and the recommendation that gets attached to both.
An update on my earlier ten-fold dose error caught post: the pattern held for another six weeks and then stopped, which I did not predict and cannot explain.
Helpful, and easy to find again, which is half of what a good reply is.
Sharps containers are a legal requirement for disposal in several jurisdictions and a sensible precaution everywhere. A rigid sealed container is the minimum.
That is all I can say without guessing.