30mg in 3ml is 10mg/ml, so 5mg is 50 units. half the barrel, feels like a lot but its right
#reconstitution 2025-06-22
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too dilute imo
nobody here should be telling you a dose. we can check your arithmetic, thats a different thing, we shall see
weighing the vial before you reconstitute is the only way to catch an underfill
if the powder is on the stopper, tap it down before you add anything. it will still dissolve either way
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anyone got a photo of what a properly dissolved vial looks like
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check your maths
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nope, redo it
not sterile water
the powder is stuck to the stopper, do i care
[edited]i keep a spare vial of bac water in the fridge purely so i never rush the maths
one unit is 0.01ml. 100 units is 1ml. everything else in this channel follows from that, i think
bac water
what do you do with the last 5 units when you cant draw them cleanly
gross powder mass is not net peptide. water and counterion are in that number
genuine question if you draw up with a bigger pin and inject with a fresh one you lose a bit more to dead space
if the maths gives you 13.7 units, change the volume. do not try to hit 13.7
is it worth buying a 3ml syringe for the diluent or is the insulin one fine
i have never once regretted using a rounder number and a slightly bigger volume
[edited]dead space
how do you all measure a half unit, or do you just not
weigh it first
label the vial
19:23marrow.mod pinned a message to this channel
the jewellery scale is a good habit but calibrate it, they drift badly
[edited]read it at eye level
write the date on
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a slightly collapsed cake is cosmetic. a puddle in the bottom is not
give it 4 minutes at room temperature before you decide it has not dissolved
you can absolutely just always use 2ml, and honestly most of us should
one unit is 0.01ml
thats 5mg/ml
took me a year to stop over-diluting. the measurement error at 4 units is worse than the convenience
a 3ml syringe for the diluent and a u100 for the dose is the setup most people here end up with
*Medutest not the other one
10mg in 2ml is 5mg/ml. so 0.5mg is 0.1ml which is 10 units on a u100
is there any reason not to just always use 2ml
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10mg in 1ml is 10mg/ml, so 2.5mg is 25 units. thats the one i use
5mg in 2ml gives 2.5mg/ml, 0.25mg is 10 units. good for a starting dose
im getting bubbles in the barrel every single time, what am i doing wrong
my vial pulled the water in on its own, is that the vacuum or did i do something
does it matter if i inject the bac water straight at the powder
can i add more bac water later to a vial ive already reconstituted
if you cannot read the mark confidently, your volume is too small. redo it at a lower concentration
anyone worked out a recon volume that puts 15mg on a round unit mark
sanity check my maths before i pin myself with something stupid
is the meniscus reading actually a real source of error or am i overthinking
cross_border_cama 3ml syringe for the diluent and a u100 for the dose is the setup most people here…
bacteriostatic water for anything multi-use. sterile water has no preservative in it at all
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thats fine
*that should say weekly
my rule is one concentration for everything so i never have to think about it at 7am, your mileage will differ
genuine question 20mg in 2ml is 10mg/ml. 1mg is 10 units, 2mg is 20 units, easy
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how long after reconstituting before its actually dissolved
swirl it. do not shake it. the foam is denatured protein and you are not getting it back
dead space in a standard insulin syringe hub is small but it is not nothing over a month
anyone else find the 15mg vials harder to get fully dissolved than the small ones
15mg in 3ml is 5mg/ml. same numbers as 10 in 2, just more of it