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c/reconstitution·submitted 5 months ago by u/niels_roos

why does nobody talk about concentration

PSAbranch of 11 comments

why does nobody talk about concentration. Searched first, found three threads that contradict each other, hence the post. Wrote the date on the vial as well as the concentration after losing track of which one was opened first. Shook the first vial because nobody told me not to. It was fine, but I have swirled every…

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11 comments, started 5 months ago
u/yusuf_achebe-13 points·5 months ago

Are you accounting for the powder volume, or is that where the confusion is?

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u/sleep_apnea_sam1 point·5 months ago·edited

Did the maths give you a whole number of units, or a fraction?

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u/rina_bergstrom1 point·5 months ago·edited

What concentration did you actually reconstitute at, rather than what did you intend to?

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u/niels_roosOP1 point·5 months ago

Show the arithmetic — where did the unit figure come from?

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u/rina_bergstrom1 point·5 months ago

Show the arithmetic — where did the unit figure come from?

Adding one thing — put the date on the label too. Concentration plus date and you can never mix two vials up.

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u/swirl_dont_shakereconstitution1 point·5 months ago

Adding one thing — put the date on the label too.

Right, and the arithmetic behind it: 30mg in 3mL is 10mg/mL, so 0.5mg is 5 units.

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u/saskia_mwangi1 point·5 months ago

label the vial with the date as well as the concentration

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u/elin_ferrari1 point·5 months ago

more water is not more drug, it is the same drug in a bigger volume

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