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

[Discussion] can we stop arguing about reconstitution until somebody posts a number

Discussionbranch of 7 comments

can we stop arguing about reconstitution until somebody posts a number — that is what I am asking, and I have already read the wiki twice. The failure modes I have actually seen posted here, in order of frequency. One: reconstituting at a different volume than intended and not writing it down, so the next draw is…

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7 comments, started 1 year ago
u/janek_ferrari45 points·1 year ago

Careful — that arithmetic is wrong. 15mg in 2mL is 7.5mg/mL, so 0.75mg draws to 10 units, not what you wrote.

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u/vito_beaulieu35 points·1 year ago

That is sterile water, not bacteriostatic. Same appearance, different product, and it matters for a multi-draw vial.

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u/kavya_radich23 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/marisol_frisk30 points·1 year ago

How many mg in the vial and how many mL are you adding?

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u/adaeze_cabrera9 points·1 year ago

label the vial with the date as well as the concentration

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u/bac_water_banditreconstitution38 points·1 year ago

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

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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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