my 10mg vial weighed 11.4g on the jewellery scale, is that wrong
U-100 syringe: 1 unit = 0.01 ml
10u = 0.10 ml
25u = 0.25 ml
50u = 0.50 ml
100u = 1.00 ml
mg drawn = ml drawn x mg/ml#reconstitution 2026-03-09
Monday40 messages6 participantstimes are UTC
Highlights from this day
- apob_over_ldl — do not add more bac water to an already reconstituted vial, you have lost track of the concentration my rule is one concentration for everything so i never have to… 22:32
- apob_over_ldl — does benzyl alcohol matter if im finishing the vial in one go 22:39
- oasis_ola — the last few units are a real loss. i accept it rather than tilting the vial and drawing air 23:32
do not add more bac water to an already reconstituted vial, you have lost track of the concentration
my rule is one concentration for everything so i never have to think about it at 7am
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gross powder mass is not net peptide. water and counterion are in that number, ask me again in a month
15mg in 3ml is 5mg/ml. same numbers as 10 in 2, just more of it
one unit is 0.01ml
does benzyl alcohol matter if im finishing the vial in one go
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a slightly collapsed cake is cosmetic. a puddle in the bottom is not
right so if you draw up with a bigger pin and inject with a fresh one you lose a bit more to dead space
does it matter if i inject the bac water straight at the powder
coming back to this do you draw up with the same pin you inject with
sanity check my maths before i pin myself with something stupid
i swirl for about thirty seconds and then leave it. never had one fail to dissolve
coming back after 20 months, has the pinned recon volume advice changed
what do you do with the last 5 units when you cant draw them cleanly
thats the vacuum
[edited]dead space in a standard insulin syringe hub is small but it is not nothing over a month, thats one data point
one unit is 0.01ml. 100 units is 1ml. everything else in this channel follows from that
it should be completely clear with no floaters. cloudy means stop
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nope, redo it
10mg in 2ml is 5mg/ml. so 0.5mg is 0.1ml which is 10 units on a u100
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do i swirl for a specific length of time or just until its clear
5mg in 2ml gives 2.5mg/ml, 0.25mg is 10 units. good for a starting dose
the powder is stuck to the stopper, do i care
lyophilised powder is far more robust than people think. it is the solution that is fragile
anyone else find the 20mg vials harder to get fully dissolved than the small ones
temperature of the diluent does not matter. how fast you push it in does
23:18marrow.mod pinned a message
i have never once regretted using a rounder number and a slightly bigger volume
swirl dont shake
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anyone got a photo of what a properly dissolved vial looks like
you can absolutely just always use 2ml, and honestly most of us should
30mg in 3ml is 10mg/ml, so 5mg is 50 units. half the barrel, feels like a lot but its right
the last few units are a real loss. i accept it rather than tilting the vial and drawing air
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thats fine
im getting bubbles in the barrel every single time, what am i doing wrong
i was wrong about this last year: it is fine to draw cold, it just stings more going in
not sterile water
benzyl alcohol is what makes it bacteriostatic. it is about 0.9% typically
too dilute imo
weighing the vial before you reconstitute is the only way to catch an underfill