Intersection · Devices × dead volume

Devices topics tagged dead volume

Topics in Devices carrying the tag dead volume. Residual liquid in hub and needle, and the dose it silently removes.

33 topics

Topic	Participants	Replies	Views	Activity
Reading a syringe in poor light, and how to avoid needing to syringe units dead volume needle gauge & length worked example Solved Reading a syringe in poor light, and how to avoid needing to Writing it up because I had to work it out twice and would rather nobody else did. The question about reading a syringe that I actually want…		2	22k	just now
Revisiting: Drawing from a pen cartridge with a syringe: how the risk profile changes dead volume missed dose storage subcutaneous injection Revisiting: Drawing from a pen cartridge with a syringe: how the risk profile changes Writing it up because I had to work it out twice and would rather nobody else did. Question about a metering device rather…		2	18k	6h
Fixed versus detachable needles: the trade-offs — does this still hold? syringe units needle gauge & length dead volume subcutaneous injection Solved Fixed versus detachable needles: the trade-offs — does this still hold? I have a specific reason for asking rather than idle curiosity, and the context is below. Working notes on Fixed versus detachable…	+8	12	39k	15h
Why a pen's dose steps are fixed and what that costs you dead volume storage subcutaneous injection missed dose Solved The question in the title: Why a pen's dose steps are fixed and what that costs you I will give what I have already checked below so nobody repeats it. A question about a device rather than about a compound,…		4	2.5k	23h
Reading U-100 graduations, with a conversion table dead volume worked example subcutaneous injection needle gauge & length Posting this under the heading it deserves: Reading U-100 graduations, with a conversion table Everything below is what sits behind that. A question about reading U-100 graduations that I think has a definite…	+35	41	2k	1d
Priming a pen and whether the primed volume is wasted storage missed dose dead volume Solved Wiki Priming a pen and whether the primed volume is wasted Writing it up because I had to work it out twice and would rather nobody else did. I have spent a fortnight trying to pin priming a pen down and I want to…	+19	23	1.3k	2d
0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters syringe units subcutaneous injection needle gauge & length dead volume Wiki 0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters — setting out what I have, and where I think it stops being reliable. A follow-up question about 0.3 ml versus 0.5 ml that I did not know to ask…	+104	114	6k	6d
Reading a syringe in poor light, and how to avoid needing to — what changed since dead volume subcutaneous injection syringe units needle gauge & length Posting this under the heading it deserves: Reading a syringe in poor light, and how to avoid needing to — what changed since Everything below is what sits behind that. What changes if the standard account of…	+3	7	27k	27d
About the Syringes & needles category syringe units dead volume needle gauge & length Pinned Wiki Insulin syringe graduations, dead volume, gauge and length selection, and reading units correctly. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is recorded…		4	45k	1mo
Reading U-100 graduations, with a conversion table — what changed since worked example dead volume syringe units subcutaneous injection Reading U-100 graduations, with a conversion table — what changed since Writing it up because I had to work it out twice and would rather nobody else did. What changes if the standard account of Reading U-100…		2	10k	2mo
[2026 update] 0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters dead volume needle gauge & length subcutaneous injection Solved On the subject in the title: 0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Working notes rather than a conclusion. A follow-up question about 0.3 ml versus 0.5 ml that I did not know to ask the…	+108	124	27k	2mo
Reading U-100 graduations, with a conversion table — one year on syringe units needle gauge & length worked example subcutaneous injection Reading U-100 graduations, with a conversion table — one year on Writing it up because I had to work it out twice and would rather nobody else did. I would like to disagree carefully with the settled view on…	+3	7	662	4mo
About the Pens & autoinjectors category dead volume missed dose storage Pinned Wiki Pen mechanics, dose counters, priming, and what happens when a pen is used off its label. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is recorded with its…	+1	5	92	5mo
Dead volume across syringe and needle combinations needle gauge & length subcutaneous injection dead volume syringe units On the subject in the title: Dead volume across syringe and needle combinations Working notes rather than a conclusion. Something about dead volume across syringe does not reconcile and I would like a second…	+72	80	28k	5mo
Filter needles: when they help and what they cost you needle gauge & length subcutaneous injection dead volume On the subject in the title: Filter needles: when they help and what they cost you Working notes rather than a conclusion. Trying to work out what would count as evidence on filter needles, before collecting…	+45	50	19k	5mo
Coming back to: Pen dose counters: what a click does and does not guarantee storage subcutaneous injection dead volume Pen dose counters: what a click does and does not guarantee — setting out what I have, and where I think it stops being reliable. Reading back through what has been written here about Pen dose counters, three…		4	105	5mo
A pen that felt like it delivered nothing: diagnosing it afterwards storage subcutaneous injection missed dose dead volume Solved On the subject in the title: A pen that felt like it delivered nothing: diagnosing it afterwards Working notes rather than a conclusion. Question about a metering device rather than about a syringe, because…	+35	39	584	6mo
Pen mechanics when the cartridge is nearly empty — does this still hold? storage subcutaneous injection missed dose dead volume Asking directly, because I could not find a straight answer: Pen mechanics when the cartridge is nearly empty — does this still hold? Pen mechanics — I have the observation and I do not trust my…	+37	47	61k	6mo
Gauge and length selection for subcutaneous injection syringe units needle gauge & length worked example subcutaneous injection Solved Gauge and length selection for subcutaneous injection Writing it up because I had to work it out twice and would rather nobody else did. A follow-up question about gauge and length selection that I did not…	+50	55	1.3k	8mo
Needle changes between doses on a reusable pen subcutaneous injection dead volume missed dose storage Posting this under the heading it deserves: Needle changes between doses on a reusable pen Everything below is what sits behind that. The question about needle changes between doses that I actually want…	+34	38	1.5k	10mo
A ten-fold dose error caught before injection needle gauge & length worked example syringe units dead volume Closed 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…	+95	103	26k	10mo
Revisiting: Filter needles: when they help and what they cost you worked example needle gauge & length subcutaneous injection dead volume Closed Revisiting: Filter needles: when they help and what they cost you — setting out what I have, and where I think it stops being reliable. Trying to work out what would count as evidence on Filter needles,…	+48	52	6.6k	11mo
A ten-fold dose error caught before injection — one year on dead volume needle gauge & length subcutaneous injection syringe units On the subject in the title: A ten-fold dose error caught before injection — one year on Working notes rather than a conclusion. Two things I would like separated before anyone answers on ten-fold dose error…	+151	157	9.4k	12mo
Second pass at: Pen dose counters: what a click does and does not guarantee dead volume storage subcutaneous injection Second pass at: Pen dose counters: what a click does and does not guarantee — setting out what I have, and where I think it stops being reliable. Two things I would like separated before anyone answers on Pen…	+63	68	51k	13mo
Needle changes between doses on a reusable pen — does this still hold? dead volume missed dose storage Solved Wiki Needle changes between doses on a reusable pen — does this still hold? I have a specific reason for asking rather than idle curiosity, and the context is below. Posting a small dataset on Needle changes…	+1	5	38k	13mo
Storing a pen in use versus a pen unopened storage missed dose dead volume Storing a pen in use versus a pen unopened Writing it up because I had to work it out twice and would rather nobody else did. Proposing that storing a pen deserves a maintained page rather than a recurring…	+14	18	13k	14mo
Storing a pen in use versus a pen unopened — what changed since subcutaneous injection dead volume missed dose Posting this under the heading it deserves: Storing a pen in use versus a pen unopened — what changed since Everything below is what sits behind that. What changes if the standard account of Storing a pen is…		2	206	15mo
Second pass at: A pen that felt like it delivered nothing: diagnosing it afterwards dead volume storage subcutaneous injection missed dose Second pass at: A pen that felt like it delivered nothing: diagnosing it afterwards — setting out what I have, and where I think it stops being reliable. Question about a metering device rather than about a…	+9	13	829	18mo
Fixed versus detachable needles: the trade-offs dead volume subcutaneous injection syringe units worked example Solved Posting this under the heading it deserves: Fixed versus detachable needles: the trade-offs Everything below is what sits behind that. I was wrong about fixed versus detachable needles in a thread last spring…	+117	121	7.3k	18mo
Follow-up: Dead volume across syringe and needle combinations syringe units worked example subcutaneous injection dead volume Solved Dead volume across syringe and needle combinations — setting out what I have, and where I think it stops being reliable. A follow-up question about Dead volume across syringe that I did not know to ask the…	+81	98	22k	18mo

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