#reconstitution 2025-12-09

coming back after 17 months, has the pinned recon volume advice changed

i have never once regretted using a rounder number and a slightly bigger volume

do i swirl for a specific length of time or just until its clear

one unit is 0.01ml. 100 units is 1ml. everything else in this channel follows from that

is a slightly cloudy solution ever ok or is that always a bin it

read it at eye level

dead space in a standard insulin syringe hub is small but it is not nothing over a month

weigh it first

how long after reconstituting before its actually dissolved

the last few units are a real loss. i accept it rather than tilting the vial and drawing air

thats fine

not sterile water

slightly off topic but 20mg in 2ml is 10mg/ml. 1mg is 10 units, 2mg is 20 units, easy

unrelated but took me a year to stop over-diluting. the measurement error at 4 units is worse than the convenience

is it normal for the cake to look slightly collapsed on one side

if the maths gives you 13.7 units, change the volume. do not try to hit 13.7

if you cannot read the mark confidently, your volume is too small. redo it at a lower concentration

do you draw up with the same pin you inject with

how much do i lose to dead space with a 29G pin

gross powder mass is not net peptide. water and counterion are in that number, not advice obviously

swirl dont shake

if the powder is on the stopper, tap it down before you add anything. it will still dissolve either way

the vacuum will pull it in. let it. fighting it is how you get a face full of aerosol

the meniscus thing is real. read it at eye level or you are guessing by a unit either way, your mileage will differ

label the date too. you will not remember which vial is which by week 31
i was wrong about this last year: it is fine to draw cold, it just stings more going in

*week 22 not week 6