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Single comment threadYou are looking at one branch of reading mg/mL threads from 2024 and half of it aged badly — 57 comments in the full submission. View in context.
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c/reconstitution·submitted 2 years ago by u/quarter_dose_queen

reading mg/mL threads from 2024 and half of it aged badly

Correctionbranch of 10 comments

Trying to settle this properly because the thread from last year went in circles. The claim: insulin syringe matters. The counter-claim: it is measurement error. Both sides have been asserting it confidently for about 16 months without either producing anything. What would actually settle it is 39 people measuring…

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This branch

10 comments, started 2 years ago
u/bac_water_banditMOD327 points·2 years ago

Retitled to remove editorialising. Put the evidence in the body.

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u/andres_sorensen106 points·2 years ago

u-100 syringe, not u-40, or your math is off by factor of 14

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u/marta_weiss30 points·2 years ago

never post a calculation as advice without stating the concentration

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u/georgi_adebayo129 points·2 years 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/rasmus_mensah266 points·2 years ago

stopper coring on the 11th draw because you keep using the same entry point. rotate.

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u/hedda_ekstrom59 points·2 years ago

This is correct. 2mL versus 6mL is the common mistake.

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u/rasmus_mensah16 points·2 years ago

stopper coring on the 5th draw because you keep using the same entry point. rotate.

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u/priya_weiss47 points·2 years ago

show your working or it is unhelpful

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u/zaid_balogun36 points·2 years ago·edited

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

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u/ismael_nwosu59 points·2 years ago

bacteriostatic and sterile water are not interchangeable, do not use them that way

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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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