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

[Question] how do you actually verify bacteriostatic water

Questionbranch of 6 comments

The title is the whole question — how do you actually verify bacteriostatic water — but here is why I am asking. Research-use-only material is not approved for human use, so treat everything in this thread as arithmetic about solutions rather than instructions for a person. If your calculation produces a fraction of…

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6 comments, started 1 year ago
u/signe_grimaldi23 points·1 year ago

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

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u/anjali_tamm8 points·1 year ago

Pushback on the syringe advice: a U-100 barrel reads units of volume. Calling them "doses" is how the confusion starts.

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u/britta_nakamura4 points·1 year ago

Correction: that gives 100 units, not what you have written. 15mg into 3mL is 5mg/mL and the division follows from there.

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u/sleep_apnea_sam3 points·1 year ago

label the vial with the date as well as the concentration

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u/erez_perrin2 points·1 year ago·edited

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/tuva_kirchner1 point·1 year ago

units are a volume on a U-100 syringe, not a dose

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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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