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c/reconstitution·submitted 13 days ago by u/aleksi_lehtinen

[Explainer] units are volume, mg are mass, this is the #1 error on this site

Explainerbranch of 4 comments

Right, the units question again, but with numbers this time. I have 12 data points over 24 weeks. The pattern is consistent enough that I do not think it is chance, and boring enough that nobody is going to screenshot it, which is usually a good sign. The thing I would flag for anyone new: the effect I am describing…

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4 comments, started 11 days ago
u/saskia_mwangi23 points·11 days ago

The single most useful thing I did was write the concentration on the vial. Stopped all the confusion after that.

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u/quarter_dose_queenlow and slow6 points·11 days ago

Yeah, showing the arithmetic is the fastest way for someone to spot the error.

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u/priya_guerrero10 points·11 days ago

Spent 8 weeks confused about concentration math until someone showed me the table. 5mg, 3mL, concentration is 5/3.

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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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