20 categories

Devices

Syringes, needles, pens and the cold chain — the hardware questions.

48 topics2,155 posts14 solved Moderators: hana.sato, KLindqvist About this category

Syringes & needles 18 Pens & autoinjectors 18 Cold chain 12

48 topics · page 1 of 2

Topic	Participants	Replies	Views	Activity
About the Syringes & needles category Devices › Syringes & needles 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
About the Pens & autoinjectors category Devices › Pens & autoinjectors 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
Travel coolers and how long they really hold — the long version Devices › Cold chain storage freeze-thaw cold chain Solved Pinned Travel coolers and how long they really hold — the long version — setting out what I have, and where I think it stops being reliable. Reporting something rather than asking about it, in case the pattern is…	+19	23	45k	14mo
About the Cold chain category Devices › Cold chain cold chain temperature excursion storage Pinned Wiki Domestic refrigeration, travel, temperature logging, and assessing an excursion after the fact. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is recorded with…		4	2k	17mo
Reading a syringe in poor light, and how to avoid needing to Devices › Syringes & needles 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. Practical question with the units stated, because I have seen…		2	22k	just now
Revisiting: Drawing from a pen cartridge with a syringe: how the risk profile changes Devices › Pens & autoinjectors 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. I have read the maintained page on this…		2	18k	6h
Fixed versus detachable needles: the trade-offs — does this still hold? Devices › Syringes & needles 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. A question about technique rather than about…	+8	12	39k	15h
A fridge failure and how I assessed the contents afterwards Devices › Cold chain cold chain storage temperature excursion A fridge failure and how I assessed the contents afterwards Writing it up because I had to work it out twice and would rather nobody else did. I have read the maintained page on this and I still have a gap,…	+14	18	46k	17h
Why a pen's dose steps are fixed and what that costs you Devices › Pens & autoinjectors 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. I have read the maintained page on this and I still have…		4	2.5k	23h
Reading U-100 graduations, with a conversion table Devices › Syringes & needles 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. Practical question with the units stated, because I have seen how…	+35	41	2k	1d
Priming a pen and whether the primed volume is wasted Devices › Pens & autoinjectors 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. Practical question with the units stated, because I have seen how…	+19	23	1.3k	2d
0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Devices › Syringes & needles 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. Practical question with the units stated, because I have seen how quickly…	+104	114	6k	6d
Reading a syringe in poor light, and how to avoid needing to — what changed since Devices › Syringes & needles 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. I have read the maintained page on this…	+3	7	27k	27d
Reading U-100 graduations, with a conversion table — what changed since Devices › Syringes & needles 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. Practical question with the units stated, because I…		2	10k	2mo
[2026 update] 0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Devices › Syringes & needles 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. Practical question with the units stated, because I have seen how quickly…	+108	124	27k	2mo
Reading U-100 graduations, with a conversion table — one year on Devices › Syringes & needles 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. Practical question with the units stated, because I have…	+3	7	662	4mo
Dead volume across syringe and needle combinations Devices › Syringes & needles 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. Practical question with the units stated, because I have seen how quickly these go wrong…	+72	80	28k	5mo
Filter needles: when they help and what they cost you Devices › Syringes & needles 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. A question about technique rather than about dose. I have been doing the same thing…	+45	50	19k	5mo
Coming back to: Pen dose counters: what a click does and does not guarantee Devices › Pens & autoinjectors 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. A question about technique rather than about dose. I have been doing the same…		4	105	5mo
Temperature loggers worth the money — the long version Devices › Cold chain storage freeze-thaw temperature excursion Closed On the subject in the title: Temperature loggers worth the money — the long version Working notes rather than a conclusion. Reporting something rather than asking about it, in case the pattern is useful to…	+110	127	48k	6mo
A pen that felt like it delivered nothing: diagnosing it afterwards Devices › Pens & autoinjectors 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. A question about technique rather than about dose. I have been doing…	+35	39	584	6mo
Pen mechanics when the cartridge is nearly empty — does this still hold? Devices › Pens & autoinjectors 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? Practical question with the units stated, because I have seen how quickly…	+37	47	61k	6mo
Airline travel with a temperature-sensitive injectable Devices › Cold chain freeze-thaw cold chain temperature excursion storage Posting this under the heading it deserves: Airline travel with a temperature-sensitive injectable Everything below is what sits behind that. A question about technique rather than about dose. I have been…	+19	23	4.9k	7mo
Gauge and length selection for subcutaneous injection Devices › Syringes & needles 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. Practical question with the units stated, because I have seen how…	+50	55	1.3k	8mo
Pen dose counters: what a click does and does not guarantee Devices › Pens & autoinjectors missed dose subcutaneous injection storage Under review On the subject in the title: Pen dose counters: what a click does and does not guarantee Working notes rather than a conclusion. I have read the maintained page on this and I still have a gap, so I am asking…	+116	122	1.6k	8mo
Temperature loggers worth the money Devices › Cold chain cold chain storage freeze-thaw Temperature loggers worth the money — setting out what I have, and where I think it stops being reliable. Reporting something rather than asking about it, in case the pattern is useful to anyone else. Over 10…	+46	50	8k	9mo
Airline travel with a temperature-sensitive injectable — what changed since Devices › Cold chain cold chain storage temperature excursion Airline travel with a temperature-sensitive injectable — what changed since Writing it up because I had to work it out twice and would rather nobody else did. I have read the maintained page on this and I…	+89	95	5.3k	9mo
Needle changes between doses on a reusable pen Devices › Pens & autoinjectors 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. I have read the maintained page on this and I still have a gap, so I am…	+34	38	1.5k	10mo
A ten-fold dose error caught before injection Devices › Syringes & needles 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. Reporting something rather than asking about it, in case the pattern is useful to anyone…	+95	103	26k	10mo
Why a pen's dose steps are fixed and what that costs you — one year on Devices › Pens & autoinjectors storage subcutaneous injection missed dose Solved Closed Asking directly, because I could not find a straight answer: Why a pen's dose steps are fixed and what that costs you — one year on I have read the maintained page on this and I still have a gap, so I am…	+30	34	2.9k	11mo

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