5mg in 2ml gives 2.5mg/ml, 0.25mg is 10 units. good for a starting dose
#reconstitution 2026-01-18
Sunday53 messages12 participantstimes are UTC
Highlights from this day
- dog_person_dev — the vacuum will pull it in. let it. fighting it is how you get a face full of aerosol 15:51
- sulphur_burp — you can absolutely just always use 2ml, and honestly most of us should, anyway 16:45
- pinch_not_stretch — unrelated but if you cannot read the mark confidently, your volume is too small. redo it at a lower concentration 17:11
- pinch_not_stretch — do i swirl for a specific length of time or just until its clear 17:21
- glasgow_vial — i have never once regretted using a rounder number and a slightly bigger volume 18:05
the vacuum will pull it in. let it. fighting it is how you get a face full of aerosol
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do not add more bac water to an already reconstituted vial, you have lost track of the concentration
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weigh it first
if you draw up with a bigger pin and inject with a fresh one you lose a bit more to dead space
update on the earlier thing is there any reason not to just always use 2ml
label the vial
how long after reconstituting before its actually dissolved
dead space
update from 25 months ago: switched to a single concentration and have not miscalculated since
coming back to this 20mg in 2ml is 10mg/ml. 1mg is 10 units, 2mg is 20 units, easy
you can absolutely just always use 2ml, and honestly most of us should, anyway
janoshik-a-2601.pdf
2 pages · 197 KB · not retained in the public archive
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write the date on
fridge-temps.csv
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seven_five_sweetdo not add more bac water to an already reconstituted vial, you have lost track of the…
i write the mg/ml on the vial with a sharpie the moment i reconstitute it
bac water
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nope, redo it
unrelated but if you cannot read the mark confidently, your volume is too small. redo it at a lower concentration
10mg vial
+ 1.0ml -> 10.0 mg/ml 0.5mg = 5u 1mg = 10u
+ 2.0ml -> 5.0 mg/ml 0.5mg = 10u 1mg = 20u
+ 2.5ml -> 4.0 mg/ml 0.5mg = 12.5u (dont)
+ 5.0ml -> 2.0 mg/ml 0.5mg = 25u 1mg = 50u👀13🙏1👍2
gross powder mass is not net peptide. water and counterion are in that number
thats 5mg/ml
10mg vial
+ 1.0ml -> 10.0 mg/ml 0.5mg = 5u 1mg = 10u
+ 2.0ml -> 5.0 mg/ml 0.5mg = 10u 1mg = 20u
+ 2.5ml -> 4.0 mg/ml 0.5mg = 12.5u (dont)
+ 5.0ml -> 2.0 mg/ml 0.5mg = 25u 1mg = 50uis it worth buying a 3ml syringe for the diluent or is the insulin one fine
swirl dont shake
right so i keep a spare vial of bac water in the fridge purely so i never rush the maths
do i swirl for a specific length of time or just until its clear
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if the maths gives you 13.7 units, change the volume. do not try to hit 13.7
do you draw up with the same pin you inject with
what do you do with the last 25 units when you cant draw them cleanly
[edited]too dilute imo
a 3ml syringe for the diluent and a u100 for the dose is the setup most people here end up with, thats one data point
my 10mg vial weighed 11.4g on the jewellery scale, is that wrong
one unit is 0.01ml
took me a year to stop over-diluting. the measurement error at 4 units is worse than the convenience
i have never once regretted using a rounder number and a slightly bigger volume
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it should be completely clear with no floaters. cloudy means stop, from memory
i use bac water even for a single-use vial because it stings less, which is not the reason it exists
round numbers
check your maths
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the last few units are a real loss. i accept it rather than tilting the vial and drawing air, your mileage will differ
temperature of the diluent does not matter. how fast you push it in does
benzyl alcohol is what makes it bacteriostatic. it is about 0.9% typically
yep 10 units
i swirl for about thirty seconds and then leave it. never had one fail to dissolve
clear or bin it
my vial pulled the water in on its own, is that the vacuum or did i do something
coming back after 3 months, has the pinned recon volume advice changed
foam is bad
read it at eye level
weighing the vial before you reconstitute is the only way to catch an underfill, still working it out
bac water or sterile water for something im going into weekly for 5 weeks
thats fine
if the powder is on the stopper, tap it down before you add anything. it will still dissolve either way
label the date too. you will not remember which vial is which by week 26, we shall see
10mg in 1ml is 10mg/ml, so 2.5mg is 25 units. thats the one i use