[Question] how do you actually verify concentration
The title is the whole question — how do you actually verify concentration — but here is why I am asking. Started reconstituting everything to a round concentration and the six-in-the-morning error rate went to zero. The dead space question sent me down a rabbit hole for a week. It is a fraction of a unit and it is…
This. Showing the working is the fastest way for somebody else to spot the mistake.
Disagree with the "more water is safer" framing. It is not safer, it is just a different number to divide by.
How many mg in the vial and how many mL are you adding?
Careful — that arithmetic is wrong. 30mg in 3mL is 10mg/mL, so 2mg draws to 20 units, not what you wrote.
twice as much water halves the concentration and doubles the units for the same dose
Reconstituted at 2mL when I meant to use a different volume. Caught it because the units looked wrong on the barrel. Now I write 10mg/mL on the glass before I put the cap back.