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c/reconstitution·submitted 9 months ago by u/quiet_reader_99

[Meta] proposal — a flair for reconstitution posts

Questionbranch of 6 comments

proposal — a flair for reconstitution posts — posting the reasoning in public because a policy you cannot inspect is just a preference. Shook the first vial because nobody told me not to. It was fine, but I have swirled every one since. Wrote the date on the vial as well as the concentration after losing track of…

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6 comments, started 9 months ago
u/saskia_mwangi16 points·9 months ago

I keep a laminated card in the drawer with the arithmetic on it. Looks ridiculous. Has never once let me draw the wrong volume.

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u/iman_falk10 points·9 months ago

Right — the volume you add is the only variable you control here, and the cake does not change it meaningfully.

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u/hedda_ekstrom3 points·9 months ago

Bacteriostatic or plain sterile water?

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u/ahmed_rasmussen1 point·9 months ago

Careful — that arithmetic is wrong. 15mg in 3mL is 5mg/mL, so 0.25mg draws to 5 units, not what you wrote.

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u/freya_onwuka1 point·9 months ago

dead space in the needle hub is real and it is small

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About c/reconstitution

The arithmetic and the technique. Bacteriostatic versus sterile water, reconstitution volume as a concentration choice, converting mg/mL into insulin-syringe units, dead space, swirl-not-shake, stopper coring, and how long a reconstituted vial is actually good for. Math errors get corrected fast and politely.

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