how much do i lose to dead space with a 30G pin
#reconstitution 2025-05-02
Friday45 messages11 participantstimes are UTC
Highlights from this day
- week_three_wall — nobody here should be telling you a dose. we can check your arithmetic, thats a different thing, i could be wrong 19:59
- VialBot — Verification log updated: Homopeptide — evidence added, status unchanged. 20:35
- declared_value — you can absolutely just always use 2ml, and honestly most of us should 21:48
- mg_per_ml — dead space in a standard insulin syringe hub is small but it is not nothing over a month 22:23
temperature of the diluent does not matter. how fast you push it in does, i have it written down somewhere
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does benzyl alcohol matter if im finishing the vial in one go
clear or bin it
give it 4 minutes at room temperature before you decide it has not dissolved
nope, redo it
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ok so do not add more bac water to an already reconstituted vial, you have lost track of the concentration
bac water or sterile water for something im going into weekly for 6 weeks
Archive lookup: declared_value first appears in this channel on 2025-01-25.
a slightly collapsed cake is cosmetic. a puddle in the bottom is not
check your maths
20mg in 2ml is 10mg/ml. 1mg is 10 units, 2mg is 20 units, easy
if you draw up with a bigger pin and inject with a fresh one you lose a bit more to dead space, take that with a pinch of salt
the jewellery scale is a good habit but calibrate it, they drift badly
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i write the mg/ml on the vial with a sharpie the moment i reconstitute it
aim the diluent at the glass wall, not at the powder. it goes in gentler, ill dig out the number
10mg in 1ml is 10mg/ml, so 2.5mg is 25 units. thats the one i use
lyophilised powder is far more robust than people think. it is the solution that is fragile
does it matter if i inject the bac water straight at the powder
my rule is one concentration for everything so i never have to think about it at 7am
*Medutest not the other one
nobody here should be telling you a dose. we can check your arithmetic, thats a different thing, i could be wrong
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what do you do with the last 5 units when you cant draw them cleanly
[edited]right so the vacuum will pull it in. let it. fighting it is how you get a face full of aerosol
write the date on
i use bac water even for a single-use vial because it stings less, which is not the reason it exists
[edited]sanity check my maths before i pin myself with something stupid
[edited]invoice_mismatchaim the diluent at the glass wall, not at the powder. it goes in gentler, ill dig out…
is a slightly cloudy solution ever ok or is that always a bin it
label the vial
my rule is one concentration for everything so i never have to think about it at 7am
my vial pulled the water in on its own, is that the vacuum or did i do something
Verification log updated: Homopeptide — evidence added, status unchanged.
if you cannot read the mark confidently, your volume is too small. redo it at a lower concentration, your mileage will differ
too dilute imo
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im getting bubbles in the barrel every single time, what am i doing wrong
if the powder is on the stopper, tap it down before you add anything. it will still dissolve either way
thats the vacuum
yep 10 units
you can absolutely just always use 2ml, and honestly most of us should
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label the date too. you will not remember which vial is which by week 15, i think
the last few units are a real loss. i accept it rather than tilting the vial and drawing air
took me a year to stop over-diluting. the measurement error at 4 units is worse than the convenience
swirl dont shake
for the archive read it at eye level
bac water
dead space in a standard insulin syringe hub is small but it is not nothing over a month
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