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c/reconstitution·submitted 1 year ago by u/niels_roos

bacteriostatic water is the most under-discussed thing on this board

PSAbranch of 7 comments

bacteriostatic water is the most under-discussed thing on this board. Not a hot take, just something I have not seen said plainly here. 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…

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7 comments, started 1 year ago
u/saskia_mwangi390 points·1 year ago

aim the stream at the glass wall, not at the cake

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u/wanjiru_varga310 points·1 year ago

Small fix — a U-100 syringe is 100 units per mL. If yours is marked differently it is not U-100 and the whole calculation changes.

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u/niels_roosOP243 points·1 year ago

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

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u/niels_roosOP218 points·1 year ago

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

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u/anya_antonsen0 points·1 year ago

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

This is the sentence that makes the rest unnecessary. Write it on the vial and the problem is gone.

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u/priya_guerrero1 point·1 year ago

This is the sentence that makes the rest unnecessary.

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/aurel_boateng1 point·1 year ago

Yes. Writing 5mg/mL on the vial takes four seconds and removes the entire class of error this board exists to fix.

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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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