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c/reconstitution·submitted 2 years ago by u/aleksi_lehtinen

the bacteriostatic water question that gets asked weekly, answered properly

Mathbranch of 6 comments

Posting this because I searched for it and got nothing useful. Setup: 0.25mg, week 32, sulphur burps present but not ruining anything. I changed exactly one variable — concentration — and tracked it for 9 weeks. Result: a difference, but a small one, and well inside what I would call noise if someone else posted it.…

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6 comments, started 2 years ago
u/yusuf_nakamura21 points·2 years ago

never post a calculation as advice without stating the concentration

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u/hedda_adeyemi6 points·2 years ago

Did you write the concentration on the vial?

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u/runa_cabrera3 points·2 years ago

Did you write the concentration on the vial?

Counter-anecdote: opposite result, same dose. Which mostly tells us the variance is huge.

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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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